When
blood from a woman's menstrual cycle is recycled to it's purest form to be employable for donation. This includes the filtration of the lining of the uterus, and other
matter that is discharged from the vagina, that is not part of the usable
blood.
Dave's
girlfriend is on her period. She can
help save a lot of lives if she donates her
blood by hemovaginal desalination.