title: [Autoradiographic study of cancer of the rectum before and after radiotherapy].
abstract: Prolifirative activity of rectum cancer cells was investigated with the help of 3H-thymidine in 13 patents before and after radiotherapy in doses 2000-4000 rad. It was established that index of the label depended upon the degree of differentiation of a tumour and was in the range of 10.3 to 21%. Preoperative irradiation in a dose of 2000 rad caused a slight decrease in the label index (8.7-19%), but affected markedly the intensity of inclusion of the preparation. Radiotherapy in a dose of 4000 rad brought about a well pronounced reduction in the label index (3.1%) and in the intensity of labelling.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000368:Aged; D001345:Autoradiography; D002455:Cell Division; D005260:Female; D006801:Humans; D007553:Isotope Labeling; D008297:Male; D008875:Middle Aged; D011879:Radiotherapy Dosage; D012004:Rectal Neoplasms / Q000473:pathology* / Q000532:radiotherapy; D013936:Thymidine; D014316:Tritium
chemical_list: D014316:Tritium; D013936:Thymidine
vernacular_title: Avtoradiograficheskoe izuchenie raka priamoĭ kishki do i posle luchevoĭ terapii