Fibroblasts fibroblast 84 article 68 priority journal 64 Animals 62 Humans 54 human 54 nonhuman 54 Mice 52 controlled study 50 animal cell 36 human cell 36 metabolism 36 animal 34 mouse 34 cell proliferation 32 protein expression 28 Cells, Cultured 26 gene expression 26 Transfection 24 cell culture 24 Cell Line 22 Cell Proliferation 20 cell differentiation 20 unclassified drug 20 Cell Differentiation 18 cell line 18 cytology 18 genetic transfection 18 messenger RNA 18