levitra indications Greatly Reduced Sperm Viability Caused By Tetracycline Passes From Father To Son In PseudoscorpionsIn a paper published in Nature's open access journal Scientific Reports, researchers at the University of Nevada, Reno report that male pseudoscorpions treated with the antibiotic tetracycline suffer significantly reduced sperm viability and pass this toxic effect on to their untreated sons. They suggest that a similar effect could occur in humans and other species