Sperm is the male reproductive cell. In the types of sexual reproduction known as anisogamy and its subtype oogamy , there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. A uniflagellar sperm cell that is motile is referred to as a spermatozoon , whereas a non-motile sperm cell is referred to as a spermatium. Sperm cells cannot divide and have a limited life span, but after fusion with egg cells during fertilization, a new organism begins developing, starting as a totipotent zygote.
Sperm Donor Search
Sex Trek 2. The Search for Sperm | cryonics.info
Please select your desired donor attributes below. Access to profiles is granted for days from the date of purchase. Free lifetime access to a donor's profile is granted with a confirmed birth report. No refunds will be provided for the purchase of any single profile or unlimited profile access purchase. This includes all Enhanced Profiles and Donor Profiles. If you do not agree to these terms, please click Cancel.
‘Irreparable harm’: Sperm donor sues OHSU over excess children
If you are a carrier for a specific disease, use the Select option to find more donors that are suitable. Only if you are a carrier for the same disease as the donor, should he be excluded. All negative donors are an option for those who have not had any carrier testing completed. Ancestry, eye and hair color are not included features in the match so we suggest you select those features that matter to you below to aid in narrowing your search.
We now offer frozen donor eggs available for immediate use through California Cryobank Donor Egg Bank. Browse the world's largest and most diverse selection of available donors. Just ask the 2, clients on our waiting lists. If you're considering additional children, it's important to purchase and store more vials while they are available. View our family planning programs for more info and free storage!