Lab-cultured mouse embryos, grown for an extended period, offer a new window on fetal development
In the course of an experiment pushing the length limits of in vitro growth, mouse embryos went from translucent clumps of cells to fetuses with beating hearts and blood cells. Image credit: Jacob Hanna
In a potential methods breakthrough, stem cell biologists grew mouse embryos for five-and-a-half days in vitro, longer than ever before. Appearing recently in
Nature, the study unveils new protocols and equipment, including a temperature-and-pressure-controlled incubator that enabled the coauthors to push the boundaries of embryo culture in the lab. Long-lived laboratory mouse embryos could be a revolutionary tool to study development and possibly to pinpoint when and how disorders arise.
Can fully vaccinated people still get COVID-19?
Over 143 million COVID-19 doses have been administered here in the U.S. As more and more Americans get their shots, many are wondering just how common it is for vaccinated people to get infected with the virus.
By: Dr. Partha Nandi
and last updated 2021-04-06 08:22:08-04
(WXYZ) â Over 143 million COVID-19 doses have been administered here in the U.S. As more and more Americans get their shots, many are wondering just how common it is for vaccinated people to get infected with the virus.
Breakthrough cases are happening. Thatâs when a person who s been fully vaccinated gets infected with the virus. But donât let that scare you. Because two real-world studies show that the risk overall is quite small. Now, the one study involved the University of Texas Southwestern Medical Center in Dallas. Over 8,000 employees participated and all were fully vaccinated - meaning they got both doses. So how many of th
Human heart adapts to space by shrinking 27% Updated
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scientific study reveals that Scott Kelly’s heart shrunk by one third during the
year he spent on the International Space Station.
Astronaut Scott Kelly jetted off on the
adventure of a lifetime on March
27, 2015, where he spent an historic 340-day mission aboard the International
Space Station. Kelly made sure to stay active by exercising six days a week
with the help of a treadmill, a stationary bicycle, and a resistance machine. Upon his return, however, a scientific study reveals that his heart shrunk by a third, with the official results published in the journal Circulation on Monday, March 29 2021.
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Gretchen Reynolds, The New York Times
Published: 04 Apr 2021 11:18 AM BdST
Updated: 04 Apr 2021 11:18 AM BdST DES MOINES, IOWA BC-WELL-EXERCISE-COVID-RECOVERY-ART-NYTSF Heart and lung damage can happen after even mild illness, prompting doctors to recommend caution before returning to your workout. (Kathryn Gamble for The New York Times)
Brisk walking improves brain health and thinking in aging people with memory impairments, according to a new, yearlong study of mild cognitive impairment and exercise. In the study, middle-aged and older people with early signs of memory loss raised their cognitive scores after they started walking frequently. Regular exercise also amplified the healthy flow of blood to their brains. The changes in their brains and minds were subtle but consequential, the study concludes, and could have implications not just for those with serious memory problems, but for any of us whose memories are starting to fade with age.