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The fourth edition of the World Health Organization (WHO) classification of urogenital tumours (WHO "blue book… Expand Nitric oxide (NO), the smallest signalling molecule known, is produced by three isoforms of NO synthase (NOS; EC 184.108.40.206… Expand From the University of California School of Medicine, San Francisco. Address reprint requests to Dr. Lue at the Department of… Expand Prenatal phthalate exposure impairs testicular function and shortens anogenital distance (AGD) in male rodents. We present data… Expand Incidence data on human papillomavirus (HPV) infection are limited, and risk factors for transmission are largely unknown. The… Expand A BSTRACT Background Sildenafil is a potent inhibitor of cyclic guanosine monophosphate in the corpus cavernosum and therefore… Expand BACKGROUND Sildenafil is a potent inhibitor of cyclic guanosine monophosphate hydrolysis [corrected] in the corpus cavernosum and… Expand Sildenafil (Viagra, UK-92,480) is a novel oral agent under development for the treatment of penile erectile dysfunction. Erection… Expand Nitric oxide (NO) is a cytotoxic agent of macrophages, a messenger molecule of neurons, and a vasodilator produced by endothelial… Expand DNA of a new papillomavirus type was cloned from a cervical carcinoma biopsy. Two EcoRI clones of 7.8 and 6.9 kb in length were… Expand