求助： 睾丸各阶段生殖细胞的形态学特征（mice, human）

qgjin

跪求：睾丸各阶段生殖细胞的形态学特征（mice, human）
: _. n* l+ J6 H% l$ `      最好是描写显微镜下的生长情况和 单个的形态学特征。

lixiaodong

See whether this is helpful. Mouse testis.

initiation

这里有一张关于小鼠生殖的图片：
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/ V, W& u2 F9 X+ t- W' CMouse spermatogenic lineage. When a spermatogonial stem cell (type As spermatogonia) divides, daughter cells can remain type As
$ [. s) P0 a7 y7 p. Wspermatogonia (self-renewal) or commit to differentiation, giving rise through 12 amplifying divisions (212) to a clone of spermatogenesis that could
+ F8 P- D) F. z, K4 Atheoretically contain 4,096 spermatozoa. Once committed to differentiation, an As spermatogonial stem cell gives rise to a pair of undifferentiated
7 |4 h- d: I( H( L+ G' [7 zspermatogonia (Apr) that are connected by a cytoplasmic bridge. Incomplete cytokinesis is a hallmark of germ cell proliferation. The first four- y7 h9 ^- G. t7 y" c# ^
population doubling divisions (21–24) generate chains of undifferentiated Apr and Aal spermatogonia; Apr, Aal4, Aal8, Aal16, which collectively make
" |) v" h: ~( t2 ]. Y% `5 ^. hup the pool of progenitor spermatogonia. Differentiation becomes evident morphologically when a chain of Aal16 spermatogonia becomes a chain of
2 f3 |  s1 `. D! m, ^: ltype A116 spermatogonia. The next five population doubling divisions (25–29) generate types A2, A3, A4, intermediate, and B differentiating
, e7 P/ L# e7 G* K9 jspermatogonia. The 10th division (210) produces primary spermatocytes (4N) and is followed by two meiotic divisions (211–212) and spermiogenesis5 p0 ?. _4 ?* \; ^, s/ F
to produce 1N, terminally differentiated spermatozoa. Abbreviations: Aal, Aaligned; Apr, Apaired; As, Asingle.

xiaomao_zhoubo

谢谢

zhangwwcell

先谢了，下载下载下来看看再说。