title: Juxtanuclear changes during the early spermatogenesis in Lebistes reticulatus (guppy).
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002467:Cell Nucleus; D005399:Fishes / Q000033:anatomy & histology*; D006652:Histological Techniques; D008297:Male; D008854:Microscopy, Electron; D012098:Reproduction; D013094:Spermatozoa / Q000166:cytology*; D013737:Testis / Q000166:cytology*