fibroblast Fibroblasts 84 Animals 74 article 68 controlled study 66 nonhuman 66 priority journal 66 human 62 Humans 60 Mice 52 human cell 46 metabolism 46 animal 44 animal cell 44 mouse 42 cell proliferation 34 unclassified drug 30 Cell Line 28 Cells, Cultured 28 protein expression 28 cell culture 26 gene expression 26 cell differentiation 24 Article 22 Cell Proliferation 22 in vitro study 22 Transfection 20 apoptosis 20 cell line 20 cytology 20