As spermatid nucleus elongates, the chromatin fibers are unwound and join together to form ribbon structure.
當(dāng)精細(xì)胞核向長形轉(zhuǎn)變時(shí), 染色質(zhì)纖維解旋并結(jié)合在一起形成緞帶結(jié)構(gòu).
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