Sperm can be frozen indefinitely. There have been normal pregnancies from sperm stored frozen for up to 20 years.

Samples of sperm are frozen in straws and stored in a tank which contains liquid nitrogen. The samples may be kept frozen for many years like this. See similar questions...

Frozen sperm must be stored in extremely cold temperatures (minus 196 C in liquid nitrogen), the freezing process is gradual to ensure that the fewest possible sperm are damaged. See similar questions...

Frozen material (sperm, embryos, etc.) can be ordered through http://neuromice.org/; however, please contact nmf-mice@jax.org for availablity, costs and additional details. Recovery, shipping and handling costs will be the responsibility of the recipient. Typically, there are no "extra" mice in the NMF program for additional screens - we operate at full capacity. However, there are two ways in which qualified extramural investigators may screen mice from the program. See similar questions...

Washed sperm is supposed to only live for 6-12 hours, but sometimes as long as 24 -- not nearly as long as sperm can live in fertile cervical mucus (sperm can live up to 5 days in fertile mucus, 2-3 days being pretty common). This is why timing is so important. See similar questions...

After getting them fresh from the barrel, they can be kept refrigerated for up to 7 days. Alternatively, they can be frozen for up to 3 months if packed and stored properly. See similar questions...

Absolutely! We regularly work with customers throughout the U.S., exchanging information and files via e-mail, FTP and fax, and we stay connected through telephone, fax and e-mail. See similar questions...

A group of people practicing will naturally have a great level of energy that we tap into, but developing the discipline for your own personal practice will pay off in many ways. The key is to commit to doing something every day. Whatever you commit to must be something that you have no problem in doing. Even starting out with a few minutes each day will have significant benefits. See similar questions...

Foods stay frozen longer if the freezer remains unopened, is full, is in a cool place and is well insulated. Usually food in a loaded freezer will stay frozen for two to four days, depending on its size. A half-filled freezer will keep food frozen only about 24 hours. Cover the freezer with blankets, keeping them away from the compressor, to help hold the cold. See similar questions...

Because freezing keeps food safe almost indefinitely, recommended storage times are for quality only. See this chart for a listing of the recommended storage time for some foods. For foods not listed, you may determine its quality after defrosting. First check the odor. Some foods will develop a rancid or off odor when frozen too long and should be discarded. Some may not look picture perfect or be of high enough quality to serve alone but may be edible; use them in soups or stews. See similar questions...

Because Paws and Claws Pet Pantry uses only the highest human grade quality ingredients it can be treated just like any other foods you purchase for your personal use. The freezer "shelf life" of our vacuum sealed foods is up to 1 year. Thawed meals may be kept in the fridge for a maximum of 2 days for optimal nutrient value. See similar questions...

Frozen products generally have a best before date on each packet. They last- between 12 to 18 months if stored under ideal domestic storage conditions, which is at temperatures between ?15 to ?18 degrees Celsius. See similar questions...

The HFEA in the UK, whose guidelines we follow at Barbados Fertility Centre, states that embryos can safely remain frozen for up to 5 years. See similar questions...

Our products can stay in the freezer for 3 to 4 months from when you get them but we suggest that they be eaten within 60 days to ensure you do not lose any food value to the product being in a frozen state. See similar questions...

Usually the sample is collected through ejaculation into a sterile collection cup, but it is also possible to obtain collection condoms for this purpose (through the doctor's office -- Milex is one company that makes them). Most clinics want the semen to be delivered within a half hour of ejaculation, around the time of liquefaction, so if one lives close enough the sample can be collected at home. If not, one has to make do with a room at the clinic, a bathroom, or any private setting. See similar questions...

Sperm ejaculated into a woman's vagina remain alive in the mucus of the cervix and are able to fertilize an egg for three to five days. Sperm ejaculated outside the body usually live only a few hours. See similar questions...

Sperm can survive for up to 5 days in the "egg white"-like cervical mucus that the woman produces at ovulation. The effect of stress is hard to measure, but it could affect the ovulation or retard it by disrupting the ovulatory hormonal cycle. See similar questions...

This depends on your individual situation, but it should be less than 72 hours since his last ejaculation in order to ensure the best motility and morphology. Where low sperm count is the reason for IUI, it is generally best to wait 48 hours between ejaculation and collecting sperm for the IUI. With no sperm count issues, it makes sense to wait about 24 hours. See similar questions...

We hold our flash-frozen fish at a constant -10° F, which is substantially colder than most home freezers. In this deep-freeze environment, properly packaged flash-frozen fish will keep for a year or more. But since most home freezers don’t get that cold, one should consider buying only enough fish to last a few weeks. This is why we encourage customers to subscribe to our auto-ship service. See similar questions...

Theoretically, embryos may be frozen indefinitely, as no biological activity takes place during cryopreservation. In practice, it is unknown how long they can remain viable. The first frozen embryo transfers resulting in live birth took place in the mid-eighties. Since then, embryos frozen as long as 12 years have resulted in successful pregnancy. Freezing and thawing protocols continue to improve, making it possible that embryos frozen more recently may have better outcomes. See similar questions...