New stem cell procedure may treat extra-chromosome infertility | Protein that eliminates male reproductive tissue in female mice embryos ID'd | Stimulating perirhinal cortex causes monkeys to view familiar objects as new
A new stem cell technique has been used to make infertile male mice with extra sex chromosomes fertile, according to findings published in Science. Researchers used skin cells to make induced pluripotent stem cells, which eliminated the extra X or Y chromosome, allowing sperm cells to form and resulting in pregnancies more than half the time.
A protein in female mice embryos helps eliminate developing male reproductive tissue, a new study in Science suggests. Researchers found that if they removed the COUP-TFII protein, embryos would develop both male and female reproductive tissue.
Activating neurons in the brains of Japanese macaques caused them to recognize new items as known and familiar items as new, according to a study published in Science. Researchers stimulated different areas of the perirhinal cortex, which is known to have something to do with visual memory, to see how it would affect the monkeys' identification of objects.
Cloud bands similar to those around Neptune have been detected surrounding brown dwarfs, massive objects that aren't quite planets and didn't make the cut as stars. This is the first time cloud bands have been found in brown dwarf atmospheres, according to findings published in Science.
Astronomers have observed a type Ia supernova created by a white dwarf siphoning off material from its huge companion star, according to findings set to be published in The Astrophysical Journal. The discovery bolsters the contention that two different processes may cause supernovae.
Adding water to whiskey prior to bottling can improve the liquor's taste, a study published in Scientific Reports suggests. The dilution strengthens the taste and smell of a compound in the whiskey called guaiacol.
Four years after treatment in a clinical trial, most children with peanut allergies have been able to tolerate the nut, according to findings published in The Lancet Child & Adolescent Health. "These children had been eating peanut freely in their diet without having to follow any particular program of peanut intake in the years after treatment was completed," said Mimi Tang, study leader.
Renata Ribeiro and Jordan Karubian, professors in Tulane University's Department of Ecology and Evolutionary Biology, received a $104,000 grant from the Morris Animal Foundation to study the effects of environmental lead on mockingbird behavior. Preliminary research has shown that mockingbirds in areas with high lead levels in the dirt have higher levels of lead in their blood and eggs and tend show more aggressive behavior than other mockingbirds.
West Virginia University has been awarded a $2.7 million grant from the Energy Department to continue its study of coal mine drainage. Researchers are using materials from acid mine drainage to collect rare earth elements.
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