Abstract：
:Four different types of spermatogonia were identified in the seminiferous tubules of the Japanese quail: a dark type A (Ad), 2 pale A types (Ap1 and Ap2), and a type B. A model is proposed describing the process of spermatogonial development in the quail. The Ad spermatogonia are considered to be the stem cells. Each divides to produce a new Ad spermatogonium and a Ap1 spermatogonium during Stage IX of the cycle of the seminiferous epithelium. An Ap1 spermatogonium produces two Ap2 spermatogonia during Stage II of the cycle, Ap2 spermatogonia produce four type B spermatogonia during Stage VI of the cycle, and type B spermatogonia produce eight primary spermatocytes during Stage III of the cycle. Consequently, 32 spermatids can result from each division of an Ad spermatogonium. Spermatogonial development in the quail differs from the process described in mammals in that there are fewer mitotic divisions and they are all synchronized with the cycle of the seminiferous epithelium. It is suggested that the fewer mitotic divisions explain why a smaller area of the seminiferous tubule is occupied by a cellular association in the quail than in mammals like the rat, ram and bull. The duration of spermatogenesis from the division of the Ad spermatogonia to sperm release from the seminiferous epithelium was estimated to be 12.77 days.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Lin M,Jones RCdoi
10.1007/BF00319382keywords:
subject
Has Abstractpub_date
1992-03-01 00:00:00pages
591-601issue
3eissn
0302-766Xissn
1432-0878journal_volume
267pub_type
杂志文章abstract：:During the formation of dental enamel, maturation-stage ameloblasts express ion-transporting transmembrane proteins. The SLC4 family of ion-transporters regulates intra- and extracellular pH in eukaryotic cells by cotransporting HCO3 (-) with Na(+). Mutation in SLC4A4 (coding for the sodium-bicarbonate cotransporter N...
journal_title：Cell and tissue research
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：2003-11-01 00:00:00
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journal_title：Cell and tissue research
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更新日期：1983-01-01 00:00:00
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journal_title：Cell and tissue research
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更新日期：1991-11-01 00:00:00
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journal_title：Cell and tissue research
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更新日期：1977-11-30 00:00:00
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journal_title：Cell and tissue research
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更新日期：1998-09-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：2007-03-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章,评审
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更新日期：2017-03-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00234184
更新日期：1979-05-25 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051324
更新日期：1999-06-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221758
更新日期：1988-07-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215699
更新日期：1982-01-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004419900114
更新日期：2000-02-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章,评审
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更新日期：2013-10-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：1981-01-01 00:00:00
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更新日期：2007-10-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：2002-01-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：2019-11-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：1987-04-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：2004-05-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216433
更新日期：1983-01-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00323574
更新日期：1993-04-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216577
更新日期：1981-01-01 00:00:00
