Gonadotropins nonhuman 56 Animals 46 priority journal 42 article 40 Female 38 gonadotropin 38 controlled study 36 female 34 animal experiment 30 follitropin 26 luteinizing hormone 26 Male 24 male 24 rat 24 Rats 22 animal cell 22 animal tissue 22 Ovary 20 Pituitary Gland 20 Cichlasoma 16 Cichlidae 16 hypophysis 16 reproduction 16 unclassified drug 16 Cichlids 14 Rats, Sprague-Dawley 14 animal 14 cichlid 14 gonadorelin 14