Scientists have known that sex-determination in vertebrates happens in the germ cells, a body's reproductive cells, and the somatic cells, the cells that are not reproductive cells. Yet they have not fully understood the ...
Plants & Animals
Sep 9, 2022
0
72
Blood-forming stem cells found in bone marrow are the life-saving component used in bone marrow transplants. However, suitable donors cannot be found in many cases. A new study reveals how the human embryo develops the precursor ...
Cell & Microbiology
Apr 28, 2022
0
67
The colonization of the seafloor is one of the most important events in evolutionary history, leading to an explosive radiation and large-scale morphological diversification of marine phyla. Flatfishes are one of the most ...
Evolution
Apr 26, 2021
0
253
Seahorses have the unique characteristic of male pregnancy, which includes the carrying of many embryos in a brood pouch that incubates and nourishes the embryos, similar to the mammalian placenta. However, the regulatory ...
Plants & Animals
Nov 16, 2020
0
17
They occur in nature, are reactive and play a role in many biological processes: polyenes. It is no wonder that chemists have for a long time been interested in efficiently constructing these compounds—not least in order ...
Biochemistry
Jul 16, 2020
0
115
Meiosis is essential to sexual reproduction. For almost 15 years, it has been commonly held that retinoic acid, a molecule derived from vitamin A, triggers meiosis in mammalian germ cells. Yet, in joint articles published ...
Cell & Microbiology
May 22, 2020
0
177
A team of researchers at Tufts University School of Medicine developed a method to grow and maintain olfactory stem cells in culture, which can then be used to restore tissue in the nose. The discovery raises hope that future ...
Biochemistry
Mar 28, 2019
1
174
In molecular biology, retinoic acid plays a key role in signalling pathways in the embryonic development of vertebrates. However, not much is known about its origins in the metazoan evolution. An international team has described ...
Cell & Microbiology
Mar 2, 2018
0
6
Humans belong to a select club of species that enjoy crisp color vision in daylight, thanks to a small spot in the center of the retina at the back of the eye. Other club members include monkeys and apes, various fish and ...
Cell & Microbiology
Jun 23, 2017
0
49
Flatfish are some of the most unusual vertebrate animals on our planet. They start out their life fully symmetrical, like any other fish, but undergo a spectacular metamorphosis where the symmetric larva is transformed into ...
Biotechnology
Dec 5, 2016
0
3
