tumor necrosis factor alpha article 108 nonhuman 102 controlled study 100 priority journal 86 Animals 82 human 78 animal cell 68 mouse 66 Humans 64 Mice 64 Tumor Necrosis Factor-alpha 58 protein expression 58 female 50 human cell 50 animal experiment 48 Female 44 animal model 44 cytokine production 40 unclassified drug 38 apoptosis 36 interleukin 6 36 Cytokines 34 Mice, Inbred BALB C 32 animal tissue 32 gamma interferon 32 cytokine 30 in vitro study 30 interleukin 10 30 Cells, Cultured 28