title: Levels of testosterone in the plasma and testis of the viviparous lizard (Lacerta vivipara Jacquin) during the annual cycle.
mesh_terms: D000818:Animals; D003429:Cross Reactions; D008116:Lizards; D008297:Male; D009929:Organ Size; D010507:Periodicity; D011863:Radioimmunoassay; D012621:Seasons; D013737:Testis / Q000378:metabolism*; D013739:Testosterone / Q000097:blood / Q000378:metabolism*
chemical_list: D013739:Testosterone