A sperm can survive for up to 48 hours. It takes about 10 hours to navigate the female reproductive track, moving up the vaginal canal, through the cervix, and into the fallopian tube where fertilization begins. Source: "From Conception to Birth"
Colored scanning electron micrograph (SEM) of squamous cell carcinoma (cancer) cells from a human mouth. The many blebs (lumps) and microvilli (small projections) on the cells' surfaces are typical of cancer cells.