Animals 4 Cricetinae 4 Immunohistochemistry 4 Leydig Cells 4 Leydig cell 4 Male 4 Mesocricetus 4 Reverse Transcriptase Polymerase Chain Reaction 4 Testis 4 Testosterone 4 animal cell 4 animal experiment 4 article 4 chorionic gonadotropin 4 controlled study 4 nonhuman 4 nucleotide sequence 4 priority journal 4 protein expression 4 steroidogenic acute regulatory protein 4 testis 4 testosterone 4 testosterone 17beta dehydrogenase 4 17-Hydroxysteroid Dehydrogenases 2 3(or 17)beta hydroxysteroid dehydrogenase 2 3-Hydroxysteroid Dehydrogenases 2 3alpha hydroxysteroid dehydrogenase 2 Adult 2 Androgens 2 Chorionic Gonadotropin 2