Western blotting article nonhuman protein expression controlled study 78 Animals 75 priority journal 67 animal experiment 59 animal tissue 57 animal cell 43 female 42 Mice 41 mouse 40 Blotting, Western 38 Female 37 immunohistochemistry 35 rat 31 male 29 animal model 28 reverse transcription polymerase chain reaction 25 Rats 24 animal 24 metabolism 24 Male 23 Mice, Inbred BALB C 19 progesterone 19 signal transduction 19 Rats, Sprague-Dawley 18 enzyme activity 17 Immunohistochemistry 16