Women have many options for oral contraceptives that are safe, effective and reversible, but despite decades of research, men have none. Now, scientists report a rat study in ACS' Journal of Medicinal Chemistry that shows ...
Biochemistry
Jan 17, 2018
0
14
The behavior of sperm cells is due, in part, to the individual DNA make-up of these cells, rather than only to the genetics of males, finds a team of scientists. Its results, which provide a new understanding of the competition ...
Cell & Microbiology
Nov 15, 2022
0
125
A new mathematical model predicts that mammalian sperm cells have two distinct swimming modes. This prediction opens new questions about potential connections between sperm cells' motor activity and their transitions to hyperactivation ...
General Physics
Nov 6, 2023
0
249
Biologists at the University of Leicester have published results of a new study into plant sex - and discovered that a particular gene switches on 'the essence of male'.
Cell & Microbiology
Mar 20, 2009
0
0
In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a "fairy tale," rooted in cultural beliefs about ...
Social Sciences
Oct 1, 2023
0
52
Scientists have created miniature magnetic swimming devices – which mimic the appearance of sperm cells – that could revolutionise disease treatment by swimming drugs to specific areas of the body.
Soft Matter
Oct 2, 2018
0
150
A study in The Journal of Cell Biology describes how a secreted enzyme helps egg cells avoid being fertilized by more than one sperm.
Cell & Microbiology
Apr 2, 2012
0
0
Researchers in Japan have found, for the first time in vertebrates, a genetic switch that determines whether germ cells become sperm or eggs. The gene is named foxl3, and has been identified using a small fish called medaka ...
Plants & Animals
Jun 11, 2015
1
99
(PhysOrg.com) -- Understanding how living cells originated and evolved into their present forms remains a fundamental research area in biology, one boosted in recent years by the introduction of new tools for genomic analysis. ...
Cell & Microbiology
Apr 22, 2009
0
0
Plant biologists at the University of California, Davis have discovered a way to make crop plants replicate through seeds as clones. The discovery, long sought by plant breeders and geneticists, could make it easier to propagate ...
Biotechnology
Dec 12, 2018
2
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