I recently noticed some blood in my semen. Should I be worried?
D001769:Blood; D006470:Hemorrhage / Q000209:etiology; D006801:Humans; D008297:Male; D052801:Male Urogenital Diseases / Q000175:diagnosis / Q000209:etiology; D008875:Middle Aged; D012661:Semen; D012669:Seminal Vesicles