Despite herculean efforts, cancer remains a formidable disease, with each malignant subtype responding differently to therapeutics. One hurdle specific to treating solid tumors is a protective layer called an extracellular ...
Materials Science
Jan 10, 2018
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15
When insects skip the light fandango their romantic foreplay often involves some pretty crazy things like hypnotic dance moves and flashy colors. In some species it ends with a complex ejaculate package that does more than ...
Evolution
Jun 27, 2017
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194
Evolution works in mysterious ways, especially when it comes to sex.
Plants & Animals
May 24, 2017
1
315
(Phys.org)—A biologist with the University of Zurich has discovered a species of dragonfly whose females play dead to avoid copulating with other males once her eggs have already been fertilized. In his paper published ...
For a mammal's sperm to succeed, it must complete the swim of its life to reach and fertilize an egg. That's easier if it swims through water, not goo.
Biotechnology
Apr 19, 2017
0
100
(Phys.org)—A team of researchers with the Institute for Integrative Nanosciences in Germany has tested the possibility of using sperm cells to deliver drugs to cancerous tumors in female patients. In their paper uploaded ...
Northwestern Medicine has developed a miniature female reproductive tract that fits in the palm of your hand and could eventually change the future of research and treatment of diseases in women's reproductive organs.
Biotechnology
Mar 28, 2017
0
227
In the animal kingdom, sperm usually are considerably smaller than eggs, which means that males can produce far more of them. Large numbers of tiny sperm can increase the probability of successful fertilization, especially ...
Plants & Animals
May 25, 2016
2
19
A tiny fruit fly has the bizarre distinction of possessing the longest sperm of any animal—20 times the length of its own body and 1,000 times that of human sperm.
Plants & Animals
Nov 18, 2015
0
254
In mammalian reproduction, sperm have a tough task: like trout swimming upstream, they must swim against a current through a convoluted female reproductive tract in search of the unfertilized egg.
Cell & Microbiology
Apr 15, 2015
0
18
