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Abstract
A simple and rapid method is described for processing histological preparations from multilayer cultures growing in plastic Petri dishes. A covering collodion film is utilized to remove the tissue from the plastic dish and transfer it onto a paper block prior to embedding in Paraplast. To avoid any disruption by the collodion of the plasticware, the cultured tissue is first immersed in a solution of collodion and absolute alcohol (1:1) and then covered with pure collodion. All steps are carried out in the cold. This procedure allows morphological, histochemical, immunofluorescent, and autoradiographic studies to be carried out on serial sections of cultured tissue.