Document Detail

Ultrastructure and changes during metamorphosis of the lympho-hemopoietic tissue of the larval anadromous sea lamprey Petromyzon marinus.
MedLine Citation:
PMID:  3595947     Owner:  NLM     Status:  MEDLINE    
The ultrastructure of the lympho-hemopoietic tissue of the typhlosole and opisthonephros of larval Petromyzon marinus was studied throughout the life cycle. In both locations, lympho-hemopoietic tissue houses a connective tissue stroma and is irrigated by a system of enlarged blood sinuses lined by a continuous endothelium. The typhlosolar and opisthonephric lympho-hemopoietic tissue consists of mature and developing blood cells belonging to erythroid, lymphoid, monocytic and granulocytic lineages. During metamorphosis there is a total degeneration of the larval opisthonephros and a full transformation of the digestive apparatus. As a consequence of these modifications the typhlosole and the opisthonephros lose their hemopoietic capacity. These changes are discussed in view of the role played in them by the so-called "hemopoietic inductive microenvironments", principally the stroma supporting apparatus and vascularization pattern.
C F Ardavín; A Zapata
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Developmental and comparative immunology     Volume:  11     ISSN:  0145-305X     ISO Abbreviation:  Dev. Comp. Immunol.     Publication Date:  1987  
Date Detail:
Created Date:  1987-08-07     Completed Date:  1987-08-07     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  7708205     Medline TA:  Dev Comp Immunol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  79-93     Citation Subset:  IM    
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MeSH Terms
Fishes / growth & development*
Hematopoietic System / growth & development*,  ultrastructure
Lampreys / anatomy & histology,  growth & development*
Lymphoid Tissue / growth & development*,  ultrastructure
Metamorphosis, Biological
Microscopy, Electron

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