R Higashiguchi

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The effects of chrysotile asbestos on lung and pleural carcinogenesis by N-bis(2-hydroxypropyl)nitrosamine (DHPN) in male Wistar rats were studied. Chrysotile, 30 mg per rat, was injected into the left pleural cavity and 3 g/kg body wt. DHPN was injected once into the abdominal cavity. Lung tumors (adenoma, adenocarcinoma, squamous cell carcinoma, and(More)
A 69-year-old male was admitted because of constipation and abdominal distension. A colon fiberscopic examination revealed the formation of ulceration. The trophozite of Entamoeba histolytica was detected from from the specimens of colon mucosal biopsy of the ulcer. The stool was positive for the cysts of E. histolytica too. He had been in China and(More)
The carcinogenic effect of N-bis(2-hydroxypropyl)nitrosamine (BHP) was studied in newborn Wistar rats. Tumors were induced in the lung (adenoma), pancreas (adenoma), kidney (nephroblastoma), and ovary (benign granulosa cell tumor) at 24 weeks after the treatment and in the lung (adenoma and adenocarcinoma), liver (hemangioma, hemangioendothelioma, and(More)
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