Electron microscope depicting<unk>  and egg in the process of fertilization. A<unk> , semen bank, or cryobank is a facility or enterprise which purchases, stores and sells human semen. The semen is produced and sold by men who are known as<unk>  donors. The<unk>  is purchased by or for other persons for the purpose of achieving a pregnancy or pregnancies other than by a sexual partner.<unk>  sold by a<unk>  donor is known as donor<unk> . A<unk>  may be a separate entity supplying donor<unk>  to individuals or to fertility centers or clinics, or it may be a facility which is run by a clinic or other medical establishment mainly or exclusively for their patients or customers. A pregnancy may be achieved using donor<unk>  for insemination with similar outcomes to sexual intercourse. By using<unk>  from a donor rather than from the<unk>  recipient's partner, the process is a form of third party reproduction. In the 21st century artificial insemination with donor<unk>  from a<unk>  is most commonly used for individuals with no male partner, i.e. single women and coupled lesbians. A<unk>  donor must generally meet specific requirements regarding age and screening for medical history. In the United States,<unk> s are regulated as Human Cell and Tissue or Cell and Tissue Bank Product (HCT/Ps) establishments by the Food and Drug Administration. Many states also have regulations in addition to those imposed by the FDA. In the European Union a<unk>  must have a license according to the EU Tissue Directive. In the United Kingdom,<unk> s are regulated by the Human Fertilisation and Embryology Authority.
Sperm bank
Semen collection
Fertility clinic
Amniotic stem cell bank
Abortion clinic
LGBT reproduction
Ova bank
Birthing center