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- noun Plural form of
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Schwann, go to prove that the outer integument does not consist of separate membranes, but is of a cellular structure, and that of these cells or "cytoblasts," there are three distinct kinds.
Schleiden describes as follows: -- "As soon as the cytoblasts have reached their full size a delicate transparent vesicle arises on their surface; this is the young cell, which at first takes the shape of a very flat segment of a sphere, of which the plane surface is formed by the cytoblast, the convex side by the young cell itself, which lies upon the cytoblast like a watch-glass on a watch" (p. 145).
These nuclei had accordingly the same significance as the nuclei of plants, and deserved the same name of cytoblasts or cell-generators.
a membrane, Dr. Henle maintains is composed of complicated cells or cytoblasts.