The fine structure of the organ of Bidder in the newly differenciate male of Bufo arenarum.
D000818:Animals; D001001:Anura / Q000033:anatomy & histology*; D004847:Epithelial Cells; D005260:Female; D006066:Gonads / Q000166:cytology*; D008297:Male; D008854:Microscopy, Electron; D010053:Ovary / Q000166:cytology*; D010063:Ovum