apyrene

英

美

adj. 无核的

But the risen temperature ( < 32 ℃) had no effects on dichotomous spermatogenesis and the shift of spermatogenesis from eupyrene sperms to apyrene.
但32℃温度以下不影响真核到无核精子的发生和二叉发生的转换。
After the eupyrene and apyrene sperm were released from testis, their ultrastructure changed distinctly in the sperm-modified vesicle.
棉铃虫真核和无核精子束从精巢中排出后，其细微结构在修精囊中发生了显著的变化。
The release time of apyrene sperm was early than that of eupyrene sperm.
无核精子的释放时间早于真核精子束。
In contrast, the apyrene bundles were released to sperm-modified vesicle 6 h before emergence, and they appeared in seminal vesicle 4 h before emergence.
无核精子在蛹羽化前6h开始从精巢释放到修精囊中，羽化前4h无核精子在贮精囊出现。
Ultrastructure of eupyrene-apyrene sperm Agrotis Ypsilon
小地老虎真核和无核精子的超微结构
Moreover, there was distinct difference in the rate of motility and movement fashion between eupyrene sperm and apyrene sperm.
真核精子与无核精子在活动比率和运动方式上都有显著差异。