UITRASTRUCTURAL STUDY OF MICE PULMONARY ADENOCARCINOMA INDUCED BY DIBENZ (A, H) ANTHRACENE

The high incidence of lung cancer in mice induceb by dibenz (a, h) anthracene is reported, reaching to more than 90％, among them 80％ tumors were adenocarcinomas. Electron microscopy revealed that some adenocarcinomas possessed features, of alvelar Type I cell, some possessed Clara cell features, and someother adcin eeareinomas possessed common features of the both.