The development of a whole suite of new reproductive technologies in recent decades has contributed to broad cultural conversations and controversies over the meaning of family in the United States. In Romancing the Sperm: Shifting Biopolitics and the Making of Modern Families Rutgers University Press,Diane Tober analyzes how sperm donation fits into this larger landscape of reproductive choices, politics, and policies. This book will be useful not only for those who are interested in medical anthropology and the anthropology of reproduction, but also anyone who wants to rethink traditional notions of family formation.
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Cap-Score detects and analyzes localization patterns using fluorescent microscopy to distinguish fertile from infertile sperm cells. At a time when more than half of male infertility cannot be explained by current methods, a new test developed by Androvia LifeSciences is able to measure male fertility. This marks a major improvement over semen analysis, the standard diagnostic tool for male infertility for more than five decades.
Sperm whales typically feed in the open ocean. Kate Savage, with the National Oceanic and Atmospheric Administration, was the lead veterinarian on the job. Only two dead sperm whales have washed up on Alaska shores to study since the s: one in Homer and another near Kenai Fjords National Park.
If you're a human and see this, please ignore it. If you're a scraper, please click the link below :- Note that clicking the link below will block access to this site for 24 hours. Sperm count in Western Countries has been declining for quite some time, researchers at the Harvard T.
Carlsen and coworkers reviewed 61 heterogeneous observational studies on semen quality published between and This review indicates that mean sperm density decreased significantly between and An extended meta-analysis with studies confirmed a decline in sperm density for the period from to
View Results. When Donald Cline opened a fertility medicine clinic in Indianapolis ininfertility was a relatively new medical specialty. There were no big sperm banks, no online sites for choosing sperm donors by their physical or mental traits.
The prefix "cryo" comes from the Greek word "kryos," meaning cold or frost. The science of cryogenics deals with the effects of extremely cold temperatures on matter. Applying this technology to preservation of sperm was a natural outgrowth of the development of artificial insemination.
They also said the rate of decline is not slowing. Both findings -- in a meta-analysis bringing together various studies -- pointed to a potential decline in male health and fertility. The analysis did not explore reasons for the decline, but researchers said falling sperm counts have previously been linked to various factors such as exposure to certain chemicals and pesticides, smoking, stress and obesity.
Sperm cryopreservation works best with single gene mutations and common genetic backgrounds, but is available to all mouse lines. If you have a mouse line that is published, please visit www. If accepted, there will be no fee for services. However, we will publish the strain as being available to the research community and we will take responsibility for distributing the strain to those requesting it.