(Phys.org)—Raising the temperature is one easy way to get chemical reactions to speed up. This temperature dependence can be accurately described by a simple exponential relation known as the Arrhenius equation. A commonly ...
Scientists at the University of Cambridge working with the Weizmann Institute have created primordial germ cells - cells that will go on to become egg and sperm - using human embryonic stem cells. Although this had already ...
Cell & Microbiology
Dec 24, 2014
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The Y chromosome is a symbol of maleness, present only in males and encoding genes important for male reproduction. But live mouse offspring can be generated with assisted reproduction using germ cells from males with the ...
Biotechnology
Nov 21, 2013
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Mammalian females ovulate periodically over their reproductive lifetimes, placing significant demands on their ovaries for egg production. Whether mammals generate new eggs in adulthood using stem cells has been a source ...
Cell & Microbiology
Apr 29, 2013
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Scientists on Sunday said they had gained insights into a remarkable bacterium that lives without oxygen and transforms ammonium, the ingredient of urine, into hydrazine, a rocket fuel.
Cell & Microbiology
Oct 2, 2011
14
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Human embryonic stem cells derived from excess IVF embryos may help scientists unlock the mysteries of infertility for other couples struggling to conceive, according to new research from the Stanford University School of ...
Cell & Microbiology
Oct 28, 2009
0
1
(PhysOrg.com) -- Human sperm have been created using embryonic stem cells for the first time in a scientific development which will lead researchers to a better understanding of the causes of infertility.
Biotechnology
Jul 8, 2009
0
1
(PhysOrg.com) -- A long-standing mystery surrounding a fundamental process in plant biology has been solved by a team of scientists at the University of California, Davis.
Plants & Animals
Jun 4, 2009
3
0
Scientists have discovered that cells use a very simple phase transition -- similar to water vapor condensing into dew -- to assemble and localize subcellular structures that are involved in formation of the embryo.
Cell & Microbiology
May 21, 2009
0
0
Researchers at ETH Zurich recently developed highly realistic simulations of the proteins on sperm and egg cells coupling together before they fuse. These findings enabled the research team to solve several mysteries of fertilization ...
Molecular & Computational biology
Feb 2, 2024
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