[Development and maturation of secretory cells in the trachea of human fetuses].

Abstract

The number of tracheal epithelial secretory cells and their mucus secretions change during the course of human foetal development. The muco-secretory cells of the respiratory mucus and glands were studied in the trachea in 46 human foetuses with the aid of histochemical techniques, and ultrastructural examination. During the second trimester of pregnancy… (More)

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