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Nicotine is consumed largely as a component of cigarettes and has a potential effect on pubertal development of Leydig cells in males. To investigate its effects, 49-day-old male Sprague Dawley rats received intraperitoneal injections of nicotine (0.5 or 1 mg/kg/day) for 2 weeks and immature Leydig cells were isolated from the testes of 35-day-old rats and treated with nicotine (0.05–50 μM). Serum...
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