Secondary spermatocytes are still evident near the periphery of the tubules but they are much less numerous than spermatids. [Please select]
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The germinal epithelium is still semiactive and small groups of primary spermatocytes are present in nearly all of the tubules. [Please select]
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Spermatid: the final cells which are converted without further division into spermatozoa: they arise by division of the second spermatocytes (Wilson). [Please select]
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By its division are formed two secondary spermatocytes, each of which give rise to two spermatids (Wilson). [Please select]
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Primary spermatocytes appear in the tubules from mid-May to early June. [Please select]
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Spermatogenesis is well under way by mid-June; at this time, two or three distinct layers of primary and secondary spermatocytes are present and these cells outnumber the Sertoli cells. [Please select]
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Spermatids appear in late June and a few of them undergo metamorphosis in early July; by mid-July, spermatids and secondary spermatocytes are the dominant cells in the seminiferous tubules, although spermatogonia are still active. [Please select]
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