Document Detail

Phenoloxidase, a marker enzyme for differentiation of the neural ectoderm and the epidermal ectoderm during embryonic development of amphioxus Branchiostoma belcheri tsingtaunese.
MedLine Citation:
PMID:  10940629     Owner:  NLM     Status:  MEDLINE    
The development of phenoloxidase during amphioxus embryogenesis was spectrophotometrically and histochemically studied for the first time in the present study. It was found that (1) PO activity initially appeared in the general ectoderm including the neural ectoderm and the epidermal ectoderm at the early neurula stage but not in the mesoderm or the endoderm, and (2) PO activity disappeared in the neural plate cells but remained unchanged in the epidermal cells when the neural plate was morphologically quite distinct from the rest of the ectoderm. It is apparent that PO could serve as a marker enzyme for differentiation of the neural ectoderm from the epidermal ectoderm during embryonic development of amphioxus.
G Li; S Zhang; J Xiang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Mechanisms of development     Volume:  96     ISSN:  0925-4773     ISO Abbreviation:  Mech. Dev.     Publication Date:  2000 Aug 
Date Detail:
Created Date:  2000-10-10     Completed Date:  2000-12-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9101218     Medline TA:  Mech Dev     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  107-9     Citation Subset:  IM    
Institute of Oceanology, Chinese Academy of Sciences, 266071, PR, Qingdao, China.
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MeSH Terms
Cell Differentiation
Chordata, Nonvertebrate / embryology*,  enzymology
Ectoderm / metabolism*
Embryo, Nonmammalian / metabolism
Epidermis / embryology*
Gene Expression
Larva / metabolism
Melanins / biosynthesis
Mesoderm / metabolism
Monophenol Monooxygenase / biosynthesis*
Neurons / metabolism*
Time Factors
Reg. No./Substance:
0/Melanins; EC Monooxygenase

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