人胎児口蓋扁桃の組織発生学的研究特に間質結合織線維に就いて

抄録

Innumerable studies have been made on the embryology of the palatine tonsil, but histogenetic study of the interstitial connective tissue, and lymphatic tissue of thepalatine tonsil.
The author studied carefully the interstitial connective tissue histogenetically, and the results are as follows:
Palatine tonsils in human fetus, appear as the dense mass of mesenchym at the apex of the epit-helial depression on the side wall of the pharynx in the 2nd fetal month and the histologic view of its lymphatic tissue is homogenous and nonsegmented.
This histological fact is a considerably different between the palatine tonsils of the human em-bryo and the lymphonoduli aggregati of small intestine, in which lymphatic tissue is made of many lymphonoduli.
On the other hand, the argentophile fibrils appear in the part of the depressed epithelium early in the 2nd fetal month. But both the argentophile and the collagenous fibrils are observed in the latter fetal age months and form the dense reticular tissue in the tonsil anlage.
The above mentioned collagenous fibrils almost disappar in the 9th fetal month, and are transf-ormed into the argentophile fibrils. Thus, they present the socalled lattice fibres which are typical in the lymphatic tissue.