Document Detail

Cellular interrelationships in the fetal rabbit testis.
MedLine Citation:
PMID:  742939     Owner:  NLM     Status:  MEDLINE    
The types and patterns of arrangement of membrane interrelationships in the fetal rabbit testis were studied, using coordinated freeze-fracture, lanthanum tracer and standard transmission electron microscopic techniques. The testicular cords contain a mixture of large spherical germ cells and oval to elongated Sertoli cells. Desmosomes are present between germ cells and Sertoli cells and between adjacent Sertoli cells. Tight junctional specializations of the type found between Sertoli cells in the adult are not seen. In freeze-fracture replicas, short strands of particles of two different size populations are found on the surfaces of Sertoli cells. Similar short strands of particles are present on the membranes of peritubular myoid cells. In lanthanum preparations, the tracer passes freely between peritubular cells and through intercellular spaces within the seminiferous cords, indicating lack of a barrier to its passage throughout the testicular tissue. Prominent macular gap junctions similar to those found between adult Leydig cells are readily observed on the surfaces of fetal Leydig cells. The presence of gap junctions in the fetal testis may be important in coordinating the active testosterone production which occurs during this period of development.
B Gondos; C J Connell
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Archives of andrology     Volume:  1     ISSN:  0148-5016     ISO Abbreviation:  Arch. Androl.     Publication Date:  1978  
Date Detail:
Created Date:  1979-04-25     Completed Date:  1979-04-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7806755     Medline TA:  Arch Androl     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  19-30     Citation Subset:  IM    
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MeSH Terms
Cell Membrane / ultrastructure
Fetus / ultrastructure*
Germ Cells / ultrastructure
Intercellular Junctions / ultrastructure*
Leydig Cells / ultrastructure
Sertoli Cells / ultrastructure
Testis / ultrastructure*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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