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Did you know?
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
Did you know?
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").