Abstract
Prion replication in the periphery precedes neuroinvasion in many experimental rodent scrapie models, and in natural sheep scrapie and chronic wasting disease (CWD) in cervids. Prions propagate in the germinal centers of secondary lymphoid organs and are strongly associated with foll...
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PMID: 22043911
PDF is available here.
Abstract
We report here that testicular nuclear receptor 4 (TR4), a member of the nuclear receptor family, modulates DNA repair specifically through the transcription-coupled (TC) NER pathway but not the global genomic NER pathway. The level of Cockayne syndrome B protein (CSB), a member of the TC-NER pathwa...
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PMID: 21918225
PDF is available here.
Abstract
Persistent infections with human papillomavirus type 16 (HPV16), HPV18, or HPV31 are necessary for the development of cervical cancer, implying that HPVs have evolved immunoevasive mechanisms. Recent global transcriptome analyses indicated that these HPV types downregulate the consti...
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PMID: 21849431
PDF is available here.
Abstract
We examined the spatial configuration of Hox clusters in embryonic mouse tissues where different Hox genes are active. When the cluster is transcriptionally inactive, Hox genes associate into a single 3D structure delimited from flanking regions. Once transcription starts, Hox clusters switch to a b...
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PMID: 21998387
PDF is available here.
Abstract
We demonstrated that overexpressed HO-1 promotes the survival of renal cancer cells by inhibiting cellular apoptosis; we also showed that the proto-oncogene H-Ras becomes activated in these cells under stress following treatment with immunosuppressive agents. However, it is not known if there is an...
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PMID: 21808062
PDF is available here.
Abstract
We show that Rrn7, a subunit of the yeast Pol I core factor, and its human ortholog TAF1B are TFIIB-like factors. Although distantly related, Rrn7 shares many activities associated with TFIIB-like factors. Domain swaps between TFIIB-related factors show that Rrn7 is most closely related to the Pol I...
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PMID: 21921198
PDF is available here.
Abstract
Delta opioid receptors represent a promising target for the development of novel analgesics. A number of tools have been developed recently that have significantly improved our knowledge of δ receptor function in pain control. These include several novel δ agonists with potent analgesic properties,...
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PMID: 21836459
PDF is available here.
Abstract
This review covers progress in proteome research on Mycoplasma pneumoniae made over the last 5 years. This bacterium is one of the smallest known self-replicating bacteria. With fewer than 700 proposed proteins, it is well suited to a comprehensive proteome analysis. While all of the...
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PMID: 21751371
PDF is available here.
Vlad C Seitan,
Bingtao Hao,
Kikuë Tachibana-Konwalski,
Thais Lavagnolli,
Hegias Mira-Bontenbal,
Karen E Brown,
Grace Teng,
Tom Carroll,
Anna Terry,
Katie Horan,
Hendrik Marks,
David J Adams,
David G Schatz,
Luis Aragon,
Amanda G Fisher,
Michael S Krangel,
Kim Nasmyth and
Matthias Merkenschlager
Abstract
We deleted the cohesin locus Rad21 in mouse thymocytes at a time in development when these cells stop cycling and rearrange their T-cell receptor (TCR) α locus (Tcra). Rad21-deficient thymocytes had a normal lifespan and retained the ability to differentiate, albeit with reduced efficiency. Loss of...
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PMID: 21832993
PDF is available here.
Abstract
We used GeLC-MS/MS, in which proteins are separated using 1-DE and identified using nanoLC-MS/MS, to generate high-quality protein catalogs. To maximize the number of identifications, all data sets were searched against the target databases using two search engines, Mascot and Paragon. As a result,...
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PMID: 21615180
PDF is available here.
Abstract
We identified the imprinting status of a mouse non-coding RNA gene, B830012L14Rik, mapped to the Dlk1-Dio3 domain by the polymorphism- and sequencing-based approach. Imprinting analysis showed that the gene was expressed maternally at E15.5, E18.5 and postnatal day 1 mice. Two transcripts of approxi...
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PMID: 21706278
PDF is available here.
Olivier Muller,
Leen Delrue,
Michalis Hamilos,
Steven Vercauteren,
Argyrios Ntalianis,
Catalina Trana,
Fabio Mangiacapra,
Karen Dierickx,
Bernard De Bruyne,
William Wijns,
Atta Behfar,
Emanuele Barbato,
Andre Terzic,
Marc Vanderheyden and
Jozef Bartunek
Abstract
We identified a set of whole blood transcripts induced at the site of coronary occlusion in the acute phase of myocardial infarction. Resolved genes indicate a predominant role for chemokines, cell-extracellular matrix, and lipoprotein alterations in the pathophysiology of acute myocardial infarctio...
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PMID: 21764664
PDF is available here.
Olivier Muller,
Leen Delrue,
Michalis Hamilos,
Steven Vercauteren,
Argyrios Ntalianis,
Catalina Trana,
Fabio Mangiacapra,
Karen Dierickx,
Bernard De Bruyne,
William Wijns,
Atta Behfar,
Emanuele Barbato,
Andre Terzic,
Marc Vanderheyden and
Jozef Bartunek
Abstract
We identified a set of whole blood transcripts induced at the site of coronary occlusion in the acute phase of myocardial infarction. Resolved genes indicate a predominant role for chemokines, cell-extracellular matrix, and lipoprotein alterations in the pathophysiology of acute myocardial infarctio...
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PMID: 21764664
PDF is available here.
Abstract
Despite detailed knowledge on the genetic network and biochemical properties of most of the nucleotide excision repair (NER) proteins, cell biological analysis has only recently made it possible to investigate the temporal and spatial organization of NER. In contrast to several other...
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PMID: 21550320
PDF is available here.
Abstract
We report on an Affymetrix analysis measuring transcript abundances in resistant (PI 567.374) and susceptible (Essex) roots upon infection by F. virguliforme, 5 and 7 days postinoculation. Many of the genes with increased expression were common between resistant and susceptible plants (including gen...
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PMID: 21751852
PDF is available here.
Javier E JE Girardini,
Marco M Napoli,
Silvano S Piazza,
Alessandra A Rustighi,
Carolina C Marotta,
Enrico E Radaelli,
Valeria V Capaci,
Lee L Jordan,
Phil P Quinlan,
Alastair A Thompson,
Miguel M Mano,
Antonio A Rosato,
Tim T Crook,
Eugenio E Scanziani,
Anthony R AR Means,
Guillermina G Lozano,
Claudio C Schneider and
Giannino G Del Sal
Abstract
We demonstrate the fundamental role of the prolyl isomerase Pin1 in mutant p53 oncogenic functions. Pin1 enhances tumorigenesis in a Li-Fraumeni mouse model and cooperates with mutant p53 in Ras-dependent transformation. In breast cancer cells, Pin1 promotes mutant p53 dependent inhibition of the an...
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PMID: 21741598
PDF is available here.
Abstract
We did not find a sex difference in CRH or its receptors following single, repeated or chronic social isolation, suggesting that sexually dimorphic processes beyond the CRH system, possibly involving vasopressin, might explain this difference....
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PMID: 21095063
PDF is available here.
Abstract
We discuss how Ca2+ signaling via VDCCs and TRP channels mediates various neuronal processes....
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PMID: 21747135
PDF is available here.
Abstract
The PGC-1 family of regulated coactivators, consisting of PGC-1α, PGC-1β and PRC, plays a central role in a regulatory network governing the transcriptional control of mitochondrial biogenesis and respiratory function. These coactivators target multiple transcription factors including NRF-1, NRF-2...
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PMID: 20933024
PDF is available here.
Abstract
To investigate the mechanisms of the therapeutic action and drug resistance to the nitrogen mustard melphalan, melphalan-induced DNA damage repair and chromatin structure were examined along the p53, N-ras and d-globin gene loci in cells carrying different repair activities. In nucle...
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PMID: 21762707
PDF is available here.
Abstract
We have found that signal transducer and activator of transcription 3 (Stat3) activation up-regulates ERβ expression in PC14PE6/AS2 lung cancer cells in a preliminary Affymetrix oligonucleotide array study, and we sought to confirm the findings. In this study, we show that IL-6 induced ERβ mRNA an...
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PMID: 21546410
PDF is available here.
Abstract
We demonstrate that the mRNA and protein expression of Klf5, a pro-proliferation transcription factor in breast cancer, was dramatically up-regulated in mouse pregnant and lactating mammary glands. Pg, but not estrogen and prolactin, induced the expression of Krüpple-like factor 5 (KLF5) in multipl...
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PMID: 21566082
PDF is available here.
Abstract
We report here that clusters of charged amino acids in the TR hormone-binding domain are required for this enhanced mode of coactivator recruitment and that mutations in these charge clusters, by disrupting TRβ2 coactivator binding, are a molecular basis for pituitary resistance to thyroid hormone,...
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PMID: 21622532
PDF is available here.
Abstract
We demonstrate that FOXL2 synergizes with SMAD2, SMAD3, and SMAD4 to stimulate murine Fshb promoter-reporter activity in heterologous cells. Moreover, SMAD3-induction of Fshb promoter activity or endogenous mRNA expression is dependent upon endogenous FOXL2 in homologous cells. FOXL2/SMAD synergy re...
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PMID: 21622537
PDF is available here.
Abstract
We have examined whether 3Cl-AHPC acts as an agonist and increases SHP activity in the repression of bile acid biosynthetic CYP7A1 and CYP8B1 genes and delineated the underlying mechanisms. Contrary to this expectation, micromolar concentrations of 3Cl-AHPC increased CYP7A1 expression but indirectly...
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PMID: 21566081
PDF is available here.
Abstract
We find that transcriptional resources are initially limiting during recovery and that recovering animals are highly sensitive to any additional decrease in transcriptional resources. We provide evidence that operons become advantageous because, by clustering growth genes into operons, fewer promote...
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PMID: 21663799
PDF is available here.
Agnès Linglart,
Christine Menguy,
Alain Couvineau,
Colette Auzan,
Yasemin Gunes,
Mathilde Cancel,
Emmanuelle Motte,
Graziella Pinto,
Philippe Chanson,
Pierre Bougnères,
Eric Clauser and
Caroline Silve
Abstract
We report a germ-line mutation in the gene encoding PRKAR1A, the cyclic AMP (cAMP)-dependent regulatory subunit of protein kinase A, in three unrelated patients with acrodysostosis and resistance to multiple hormones. The mutated subunit impairs the protein kinase A response to stimulation by cAMP;...
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PMID: 21651393
PDF is available here.
Abstract
We report that a luciferase reporter containing the 3'-UTR of GR-α is significantly repressed in MM.1R cells when compared to MM.1S cells, suggesting that one or several microRNAs that are upregulated in MM.1R maybe in part responsible for the downregulation of the GR-α transcript. To examine post...
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PMID: 21761344
PDF is available here.
Abstract
We show through chromatin immunoprecipitation (ChIP) that SPT5L/KTF1, a silencing factor and a homolog of SPT5 elongation factors, binds chromatin at loci subject to transcriptional silencing. Chromatin binding of SPT5L/KTF1 occurs downstream of RNA Polymerase V, but independently from the presence...
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PMID: 21738482
PDF is available here.
Abstract
Barley Mildew resistance locus a (Mla) is a major determinant of immunity to the powdery mildew pathogen, Blumeria graminis f. sp. hordei. Alleles of Mla encode cytoplasmic- and membrane-localized coiled-coil, nucleotide binding site, leucine-rich repeat proteins that mediate resistance when compleme...
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PMID: 21323465
PDF is available here.
Abstract
We assayed the activity of the quorum-sensing circuit, with a focus on defining the functions of the feedback loops. We quantitatively investigated the signaling input-output relation both in cells with all feedback loops present as well as in mutants with specific feedback loops disrupted. We found...
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PMID: 21613980
PDF is available here.
Abstract
We report that the microRNA-10b gene (miR-10b) was silenced in gastric cancer cells by promoter methylation. In this study, using a methylation array and bisulfate pyrosequencing analysis, we found that miR-10b promoter CpGs were heavily methylated in gastric cancers. Clinicopathologic data showed...
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PMID: 21562367
PDF is available here.
Brett S Carver,
Caren Chapinski,
John Wongvipat,
Haley Hieronymus,
Yu Chen,
Sarat Chandarlapaty,
Vivek K Arora,
Carl Le,
Jason Koutcher,
Howard Scher,
Peter T Scardino,
Neal Rosen and
Charles L Sawyers
Abstract
We find that AR transcriptional output is decreased in human and murine tumors with PTEN deletion and that PI3K pathway inhibition activates AR signaling by relieving feedback inhibition of HER kinases. Similarly, AR inhibition activates AKT signaling by reducing levels of the AKT phosphatase PHLPP....
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PMID: 21575859
PDF is available here.
Abstract
We have recently demonstrated that Tet1 is specifically expressed in murine embryonic stem (ES) cells and is required for ES cell maintenance. Using chromatin immunoprecipitation coupled with high-throughput DNA sequencing, here we show in mouse ES cells that Tet1 is preferentially bound to CpG-rich...
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PMID: 21451524
PDF is available here.
Abstract
We analyzed the binding of HBc to cccDNA and the impact of HBc on cccDNA epigenetic profile in the liver biopsy samples of 22 patients with chronic Hepatitis B (CHB). We found that HBc binding to HBV cccDNA occurred preferentially at CpG island 2, an important region for the regulation of HBV transc...
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PMID: 21546797
PDF is available here.
Abstract
We tested the functionality of myosin light chain kinase pseudogene (MYLKP1) in human cells and tissues by RT-PCR, promoter activity, and cell proliferation assays. MYLKP1 is partially duplicated from the original MYLK gene that encodes nonmuscle and smooth muscle myosin light chain kinase (smMLCK)...
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PMID: 21441351
PDF is available here.
Abstract
We investigated whether this polymorphism affects either transcription or translation using luciferase reporter constructs containing variant GCLC 5' UTRs. Higher luciferase activity was observed in HepG2 and human embryonic kidney 293 (HEK293) cells transfected with constructs containing either 8 o...
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PMID: 21444626
PDF is available here.
Abstract
We review recent studies exploring the role of DNA methylation in these critical processes. Further, we suggest that, perhaps, the adult brain controls and utilizes the mechanism of DNA methylation in non-traditional ways that are waiting to be explored....
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PMID: 21527830
PDF is available here.
Abstract
Changes in the concentration and spatial distribution of Ca(2+) ions in the cytoplasm constitute a ubiquitous intracellular signaling module in cellular physiology. With the advent of Ca(2+) dyes that allow direct visualization of Ca(2+) transients, combined with powerful experimenta...
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PMID: 21809493
PDF is available here.
Abstract
We showed that the E3 ubiquitin ligase Itch negatively regulated the development and function of HSCs. Itch(-/-) mice had HSCs with enhanced frequency, competence and long-term repopulating activity. Itch-deficient HSCs showed accelerated proliferation rates and sustained progenitor properties, as w...
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PMID: 21478879
PDF is available here.
Abstract
We highlight some recent data on the transcriptional regulation of hyaluronan synthase (Has1-3) expression and on the post-transcriptional control of hyaluronan synthase activity, which, in close association with the supply of the UDP-sugar substrates of hyaluronan synthase, adjust the rate of hyalu...
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PMID: 21362137
PDF is available here.
Abstract
We describe the ways in which pseudogenes exert their effect on coding genes and explore the role of pseudogenes in the increasingly complex web of noncoding RNA that contributes to normal cellular regulation....
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PMID: 21398401
PDF is available here.
Abstract
We provide step-by-step procedures for performing an siRNA knockdown experiment from cell culture to analysis of knockdown using quantitative real-time PCR....
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PMID: 18369992
PDF is available here.
Abstract
We addressed the question of the influence of the locus structure and epigenetic modifications of the target locus on its susceptibility for being paramutated by trans-acting small RNA molecules. Silencing was induced by crossing a 35S promoter silencer locus 271 with two different 35S-driven transg...
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PMID: 21521939
PDF is available here.
Abstract
We show herein that transforming growth factor (TGF)-β induced a Smad3-dependent sustained stimulation of Egr2 gene expression in normal fibroblasts. Overexpression of Egr-2 was sufficient to stimulate collagen gene expression and myofibroblast differentiation, whereas these profibrotic TGF-β resp...
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PMID: 21514423
PDF is available here.
Abstract
We studied early transcriptional changes of inflammatory mediators in the grafts during combined auxiliary liver-kidney transplantation using microarrays and real-time polymerase chain reaction. The results were correlated to clinical data.
Liver and kidney grafts both exhibited an u...
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PMID: 21494202
PDF is available here.
Abstract
A relatively high degree of nuclear DNA (nDNA) methylation is a specific feature of plant genomes. Targets for cytosine DNA methylation in plant genomes are CG, CHG and CHH (H is A, T, C) sequences. More than 30% total m(5)C in plant DNA is located in non-CG sites. DNA methylation in plants is specie...
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PMID: 21549230
PDF is available here.
Abstract
The ATM substrate Chk2-interacting Zn(2+)-finger protein (ASCIZ, also known as ATMIN and ZNF822) has previously been reported to be important for the repair of methylating and oxidative DNA damage, and it has also been proposed to regulate the stability and DNA damage-independent act...
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PMID: 21415597
PDF is available here.
Abstract
We show that deletion of TIF1γ in adult hematopoiesis is compatible with life and long-term maintenance of essential blood cell lineages. However, loss of TIF1γ results in deficient long-term hematopoietic stem cell (LT-HSC) transplantation activity, deficient short-term HSC (ST-HSC) bone marrow r...
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PMID: 21474105
PDF is available here.
Marilena D Papaioannou,
Mélanie Lagarrigue,
Charles E Vejnar,
Antoine D Rolland,
Françoise Kühne,
Florence Aubry,
Olivier Schaad,
Alexandre Fort,
Patrick Descombes,
Marguerite Neerman-Arbez,
Florian Guillou,
Evgeny M Zdobnov,
Charles Pineau and
Serge Nef
Abstract
We previously showed that Dicer, an RNaseIII endonuclease required for microRNA (miRNA) biogenesis, is absolutely essential for Sertoli cells to mature, survive, and ultimately sustain germ cell development. Here, using isotope-coded protein labeling, a technique for protein relative quantification...
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PMID: 20467044
PDF is available here.
Abstract
We determined the inflammatory cell concentrations in blood and sputum, nitric oxide in exhaled air (FeNO), C-reactive protein (CRP) in plasma, cytokines (IL-6, 8, 1β, 10, 12, TNF-α) and SLPI (leukocyte protease inhibitor) and total antioxidant status (TAS) in blood and sputum, the activity of nuc...
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PMID: 21454005
PDF is available here.
Abstract
We show that although MSCs effectively engraft in AMI tissue, this engraftment leads to downregulation of CP expression in the implanted MSCs. We also found that pretransplantation cardiac specification of MSCs by exposure of the cells to transforming growth factor beta 1 (TGF-β1) led to sustained...
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PMID: 20666606
PDF is available here.
Regine M Schoenherr,
Karen S Kelly-Spratt,
ChenWei Lin,
Jeffrey R Whiteaker,
Tao Liu,
Ted Holzman,
Ilsa Coleman,
Li-Chia Feng,
Travis D Lorentzen,
Alexei L Krasnoselsky,
Pei Wang,
Yan Liu,
Kay E Gurley,
Lynn M Amon,
Athena A Schepmoes,
Ronald J Moore,
David G Camp,
Lewis A Chodosh,
Richard D Smith,
Peter S Nelson,
Martin W McIntosh,
Christopher J Kemp and
Amanda G Paulovich
Abstract
We generated extensive transcriptional and proteomic profiles from a Her2-driven mouse model of breast cancer that closely recapitulates human breast cancer. This report makes these data publicly available in raw and processed forms, as a resource to the community. Importantly, we previously made bi...
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PMID: 21448875
PDF is available here.
Abstract
We demonstrate that human foreskin fibroblasts (HFFs) express an MSC-like immunophenotype and possess immunosuppressive properties similar to BMSCs but lack the capacity for osteogenic and adipogenic differentiation. HFFs suppressed human peripheral blood mononuclear cells (PBMC) proliferation stimu...
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PMID: 20712449
PDF is available here.