The incidence of oral cancer in India is found to be much higher than that of lung cancer which is more common in the Western countries (2). In India the smoking of bidi — made locally by rolling crude tobacco in the Timbri leaf (Diospyros embryopteris) or Kuda leaf (Hollarhena antidysenterica) — is more prevalent than smoking of cigarette. Kahler and Lloyd (1) have carried out the electron microscopy of cigarette and cigar smoke. The present paper reports comparative Electron microscope study of the smoke deposit from bidi and cigarette.
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