A new study shows that humans and tiny aquatic animals known as rotifers have something important in common when it comes to sex.
Plants & Animals
Jun 14, 2010
0
0
Researchers at University of California San Diego School of Medicine and in Japan have used an ancient fish to reel in new insights about human biology and, in particular, how and why a widely used medication works to abort ...
Plants & Animals
Feb 17, 2022
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176
One in three women in Europe inherited the receptor for progesterone from Neandertals—a gene variant associated with increased fertility, fewer bleedings during early pregnancy and fewer miscarriages. This is according ...
Evolution
May 27, 2020
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1912
Bar-Ilan University researchers have found that these bacteria "sense" pregnancy and "understand" the need to move to the next generation in order to assist babies in breaking down the sugar in mother's milk.
Cell & Microbiology
Apr 16, 2019
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181
Everyone knows that a plate of food doesn't look as delicious after you've already eaten a big meal. But imagine if your internal state actually made you blind to food.
Cell & Microbiology
Jun 4, 2015
1
12
(Phys.org) -- For years biologists have puzzled over how it is that elephants are able to maintain such long pregnancies, which typically run to nearly two years. While many theories have been tossed around, no one really ...
In a finding that overturns conventional wisdom, scientists are reporting the first discovery of the female sex hormone progesterone in a plant. Until now, scientists thought that only animals could make progesterone. A steroid ...
Biochemistry
Feb 4, 2010
1
0
Microplastics, owing to their chemical properties, can carry micropollutants into a fish's digestive system where they are subsequently released through the action of its gastric and intestinal fluids. EPFL scientists, working ...
Plants & Animals
Oct 26, 2021
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1
Current tests for male fertility include measuring the concentration and motility of spermatozoa. However, other characteristics of sperm, such as their ability to follow a chemical trail to the egg, can influence the likelihood ...
Analytical Chemistry
Feb 19, 2020
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11
Researchers from Western Sydney University have found a new, non-invasive way to detect pregnancy in Merino sheep through the analysis of reproductive hormones in wool.
Veterinary medicine
Apr 9, 2019
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8
Progesterone also known as P4 (pregn-4-ene-3,20-dione) is a C-21 steroid hormone involved in the female menstrual cycle, pregnancy (supports gestation) and embryogenesis of humans and other species. Progesterone belongs to a class of hormones called progestogens, and is the major naturally occurring human progestogen.
Progesterone is commonly manufactured from the yam family, Dioscorea. Dioscorea produces large amounts of a steroid called diosgenin, which can be converted into progesterone in the laboratory.
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