[Ultrastructure of the middle piece of spermatids of di-, tri- and tetraploid silkworms].
D000818:Animals; D012831:Bombyx; D004171:Diploidy; D008297:Male; D008854:Microscopy, Electron; D011123:Polyploidy; D013094:Spermatozoa / Q000166:cytology*
Ul'trastruktura promezhutochnogo otdela spermatid u di-, tri- i tetraploidov shelkopriada.