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Crystallography reveals the 3-D structure of mammalian sperm receptor

... sequence that allows them to form a matrix of filaments, the so-called zona pellucida that completely surrounds the egg. The Protein Crystallography ... challenging due to its high heterogeneity", says Luca Jovine. The zona pellucida is essential for natural fertilization in mammals. The ...

Stem Cell Biotherapy Sues Casey Nabavi, Co-Founder and Former President, for Conduct Resulting in Claims by SCB Patients Against Nabavi, Embezzling Money and Converting Other Assets Belonging to SCB and for Wrongfully Establishing Cellulogix Biosciences t

... become ill and personally advised patients how to manage these side effects. Nabavi/Cellulogix have offices/clinics in Los Angeles, Tampa, Montreal, zona Rio (Mexico) and Istanbul. The SCB lawsuit also seeks to recover SCB funds in excess of $1.65 million that Navabi paid himself before leaving ...

Deportation Tied to Higher HIV Risk for Men Injecting Drugs

... The largest number of drug users per capita in Mexico live here and an estimated 5,000 female sex workers can be found in the city's busy zona roja (red light zone), the researchers said. All these factors contribute to a growing epidemic of HIV and other sexually transmitted infections in ...

Couples with fertility problems where the man is over 35 have increased difficulty in conceiving

... "We believe that the use of IVF or ICSI should be suggested to infertile patients where either party is over 35 years of age. In IVF, the zona pellucida (the outer membrane of the egg) seems to be an efficient barrier in preventing the penetration of sperm with DNA damage, and in ICSI, the ...

New Compound May Improve Fertility in Smokers

... the outside cover of a human egg, called the zona pellucida. Four men had a high number of sperm attaching to the zona (normal, Group I), while five other smokers had ... resulted in stimulation of sperm binding to the zona ranging from 133 percent to 330 percent, with a ...

Synthetic Cannabinoid Could Improve Fertility in Smokers

... the outside cover of a human egg, called the zona pellucida. Four men had a high number of sperm attaching to the zona (normal, Group I), while five other smokers had ... resulted in stimulation of sperm binding to the zona ranging from 133 percent to 330 percent, with a ...

Limiting sperm motility for contraception

... sperm with eggs whose outer covering, called the zona pellucida, had been removed. They found that the ... of these mice is their inability to penetrate the zona pellucida,” said Clapham. “While this is a bit ... when it needs more power to penetrate the zona pellucida.”Clapham said that a contraceptive ...

Common contraception

... gene were unable to penetrate the outer covering of the egg, called the zona pellucida. But when the researchers mixed the sperm with eggs that had the ... turbocharge at the last instant, when it needs more power to penetrate the zona pellucida," Dr Chapman speculated.A contraceptive designed to prevent ...

Black and White in ‘Shades of Grey

... society’s color- coded stratification. In humans, melanin is a pigment that imparts color to the skin, hair, pigmented epithelium of the retina, zona recticularis of the adrenal gland, stria vascularis of the inner ear and some areas of the brain. Melanin molecules are composed of aggregates of ...

A new contraceptive

... with mice, the researchers discovered that the sperm of mice without the CatSper gene were unable to penetrate the outer covering of the egg, the zona pellucida. But when the researchers mixed the sperm with eggs that had the covering removed, they fertilised normally. A contraceptive ...
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(Date:7/25/2014)... WASHINGTON (July 24, 2014)The link between autism and ... the puzzle of the disease, and is largely ... Foundation Autism Research Initiative (SFARI), George Washington University ... to offer truly integrative and in-depth answers to ... research. , LaMantia, professor of pharmacology and ...
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