Male laboratory animals who got remedies comparable to bosentan formulated problems with their testicles and produced much less sperm (male reproductive cells) than ordinary. Bosentan is a selected and competitive antagonist at endothelin receptor types ETA and ETB. Bosentan has a rather better affinity for ETA receptors than for ETB https://martinukwis.idblogmaker.com/25850927/details-fiction-and-tracleer