[Age and seasonal changes in the concentration of gonadotropins in the blood of ducks].
D000367:Age Factors; D000818:Animals; D004372:Ducks / Q000097:blood*; D006065:Gonadotropins, Pituitary / Q000097:blood*; D012621:Seasons
D006065:Gonadotropins, Pituitary
Vozrastnye i sezonnye izmeneniia kolichestvennogo soderzhaniia gonadotropinov v perifericheskoĭ krovi utok.