A discovery that blocks the normal transition of semen from a thick gel to a liquid shows promise for development of a new form of non-hormonal, over-the-counter contraception. A research team recently showed that blocking a prostate-specific-antigen in human ejaculate samples caused the semen to remain in its thick gel form, trapping the majority of the sperm.
Click here for original story, Trapping sperm in semen’s natural gel could lead to new contraceptive
Source: ScienceDaily