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Ultrastructural differentiation of the epithelium and mucous glands of the esophagus in the chick embryo
Author(s) -
Hinsch Gertrude W.
Publication year - 1967
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1051230203
Subject(s) - biology , epithelium , ultrastructure , anatomy , embryo , mucin , mucus , microbiology and biotechnology , pathology , medicine , ecology , biochemistry , genetics
Esophagi of White Leghron chick embryos, six days to hatching, were fixed in 5% glutaraldehyde in a cacodylate‐sucrose buffer, postfixed in 1% OsO 4 , dehydrated and embedded in Araldite. Tissues were sectioned with glass knives and viewed with a Philips EM 100C. The epithelium in early stages of development is characterized by small intercellular spaces, few cell processes and few desmosomes. In contrast the differentiated epithelium contains numerous cell processes, large intercellular spaces and numerous desmosomes. Mucin appeared in the mucous glands at 17 days .