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September 28, 1907


JAMA. 1907;XLIX(13):1110-1114. doi:10.1001/jama.1907.25320130044001o

DEFINITION AND EMBRYOLOGY OF SYNCYTIAL TISSUE.  The word "syncytium" is derived from two Greek words, signifying together, a hollow vessel.

1. Biology Definition. 

2. Zoology Definition.  —The syncytium is the ectoderm of a sponge.

3. Definition as to place in human anatomy.  —The syncytium is one of the epithelial layers of the chorionic villi. It is of fetal origin; this has been proved by the fact that in men and children neoplasms have been found of which syncytial tissue formed one of the component parts. Peters,1 Minot2 and Marchand3 have demonstrated conclusively that the syncytium is derived from the primitive ectoderm and mesoderm or trophoblast. These investigations have opened the way into a broad field for the scientist; they have thrown a new light on pathologic findings on. the subject

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