Spermiogenesis

Cov qauv no rov kho cov txheej txheem ntawm cov kab mob phev (spermiogenesis): los ntawm cov kua phev (spermatid) mus rau cov qe phev (spermatozoon). Muaj li 10000 thaj tsam. Ua los ntawm qib PVC zoo. Ntawm lub hauv paus.

Dim: 53 * 38 * 5cm