[Histogenesis of gastric hyperplastic changes in mice].

In experiments on CC57W mice fed carcinogenic substances the author has studied some hyperplastic changes arising in the stomach of 157 mice. In all these cases the original elements participating in the development of pathological structures: micropolyps, adenomatous diverticula, polypoid reactive adenomatous-connective tissue growths were found to be either neck cambial elements or retaining the cambial activity cell elements of deep-seated glandular portions, as well as of different portions of the lining and gastric pit epithelium.