A cryobank is an all-encompassing term for a clinic that collects and stores human tissue for later use. This can include donor sperm, eggs, umbilical cord blood, stem cells, and embryos. Seattle Sperm Bank is a cryobank that currently focuses exclusively on providing donor sperm to women and families looking to conceive a child. As one of the nation’s leading cryobanks, SSB provides personal storage of donor sperm for both directed donors and known donors.