Participation will last approximately 2 months. The study involves a minimum of 9 visits in Seattle, WA. Clinic visits at Screening, Day 1 and Day 10 will take about 1-1.5 hours each. On Day 1 & 10 a fine needle aspiration of one testis will be performed. The Day 7, Day 17, and Day 40 visits will take approximately 30 minutes. The other visits will take about 15 minutes each time. Over the course of the study, which includes 5 separate blood draws, approximately 12 ounces (one and a half cups) of blood will be drawn. Some of the study drugs will be given by injection. One drug is a topical gel.