How can we address the concerns of religious and ethical groups regarding male contraception?

Mar 14, 2011 ... 10 in Animal Behavior, they analyzed a coda made by sperm whales around the world. Called 5R, it's composed of five consecutive clicks, and ... Jun 1, 2018 ... We conclude that incubation of human sperm with glycerolphospholipids into the membranes of sperm improves sperm viability, motility, and resistance to ... Dec 1, 2021 ... 14, a team of scientists at Tianjin University, in eastern China, detailed how they developed a bioplastic made with DNA from salmon sperm, ... Semen is collected from the man, usually through masturbation. The egg and sperm are ultimately joined in a glass dish, where conception takes place and the new ... Feb 28, 2023 ... Men produce several million sperm per day—about 1,000 per second. To prevent pregnancy, all of these need to be stopped from reaching an egg. Semen is a mixture of sperm and fluid from the male reproductive organs. It exits the penis, through the urethra, during ejaculation. Testicles (testes) – oval ... Jun 5, 2019 ... This process, called in vitro gametogenesis (IVG), raises the possibility that babies could be made using muscle or liver or blood cells. Mar 10, 2021 ... Sperm consist of a head, which contains the genetic payload, and a tail, which is a modified motile cilium. ... Because motility is crucial to ... PSA is an enzyme present in male semen that helps sperm motility. In addition, female ejaculate usually contains fructose, a form of sugar. Fructose is also ... Two male sperm whales (Physeter macrocephalus) stranded along the northern California coast with large amounts of fishing net scraps, rope, and other plastic ...