Animalia 4 Olfactory placode animal tissue 4 article 4 controlled study 4 forebrain 4 gonadorelin 4 immunocytochemistry 4 immunoreactivity 4 larva 4 nonhuman 4 olfactory nerve 4 preoptic area 4 priority journal 4 Amphibia 2 Animal 2 Animals 2 Anura 2 Brain 2 Bufo arenarum 2 Cell Differentiation 2 Cichlasoma 2 Cichlasoma dimerus 2 Cichlidae 2 Cichlids 2 Development 2 Differentiation 2 Gallus gallus 2 GmRH 2 Gonadorelin 2