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
0
0
(Phys.org) —A team of paleontologists with the Chinese Academy of Sciences in Beijing has discovered what are believed to be fossilized ovarian follicles in three birds from approximately 125 million years ago. As they ...
Mutations that disrupt development of germ cells cause infertility or birth defects. Mutations that cause female infertility in humans, such as mutations in the gene BMP15, also cause infertility in zebrafish. However, female ...
Cell & Microbiology
Jan 22, 2024
0
45
During embryonic development, two different cascades of genetic signals determine whether the embryo's primordial gonad will become testes or ovaries, and thus whether the embryo will develop into a male or a female. Disruptions ...
Molecular & Computational biology
Jan 4, 2023
0
64
Researchers at Karolinska Institutet in Sweden have analyzed all cell types in the human ovary and found that the hotly debated "egg stem cells" do not exist. The results, published in Nature Communications, open the way ...
Cell & Microbiology
Mar 2, 2020
1
422
A team of researchers at the University of Georgia has found a way to use the CRISPR-Cas9 gene editing tool on reptiles. In their paper uploaded to the bioRxiv preprint server, the group describes the technique they developed ...
Researchers from New Zealand's University of Otago have discovered the molecular mechanism by which queen honeybees carefully control worker bees' fertility.
Plants & Animals
Aug 3, 2016
0
298
Reproduction is highly dependent on diet and the ability to use nutrients to grow and generate energy. This is clearly seen in women, who must provide all the nutritional building blocks required to support a growing embryo. ...
Cell & Microbiology
Jan 28, 2016
0
20
A medication commonly taken for Type II diabetes, which is being found in freshwater systems worldwide, has been shown to cause intersex in fish -male fish that produce eggs.
Ecology
Apr 24, 2015
3
1212
Nutrition and metabolism are closely linked with reproductive health. Several reproductive disorders including polycystic ovary syndrome, amenorrhea, and ovarian cancer have been linked to malnutrition, diabetes, and obesity. ...
Cell & Microbiology
Mar 19, 2015
0
22
The ovary is an ovum-producing reproductive organ, often found in pairs as part of the vertebrate female reproductive system. Ovaries in anatomically female individuals are analogous to testes in anatomically male individuals, in that they are both gonads and endocrine glands.
This text uses material from Wikipedia, licensed under CC BY-SA
