George Tolnai

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A group of 80 menstruating rhesus (Macaca mulatta) monkeys were randomly allocated to four similar rooms (20 monkeys/room) and then to one of five dose groups (four females/dose group/room). Each day the monkeys self-ingested capsules containing doses of 0, 5, 20, 40 or 80 microg Aroclor 1254/kg body weight. After 25 months of continuous dosing,(More)
A total of 80 menstruating rhesus monkeys (Macaca mulatta) were equally and randomly divided among groups receiving 0, 5, 20, 40, or 80 mu g of Aroclor 1254/kg body weight/day during a 6-year toxicological-reproduction study. During the first 3 years of the study, 4 of the treated monkeys became moribund and were euthanized; 3 had endometriosis. This(More)
An electron microscopic study was conducted on biopsies from 18 young hypospermatogenic patients. No signs of "tubular blockage" or "germinal disorganization" were found. The relationships between the different components of the germinal epithelium were comparable to those found in normal testes. Germ cells were often connected by cytoplasmic bridges and(More)
Eight renal oncocytomas are described. Clinical manifestations were present in 3 cases, with hematuria occurring in 2 and flank pain in 2. Tumors were between 2.5 and 10.0 cm. in diameter and showed considerable variation in histologic pattern. The tan coloration of some tumors may permit a naked-eye distinction from renal cell carcinoma. All tumors(More)