The origin of reproductive organs
Early in human development, during the first trimester of gestation, a fetus may have XX or XY chromosomes that indicate its sex. Yet at this stage a mass of cells known as the bipotential gonad that ultimately develops into either ovaries or testes.....»»
Scientists create method to bond hydrogels and other polymeric materials using chitosan
Hydrogels are versatile biomaterials conquering an increasing number of biomedical areas. Consisting of water-swollen molecular networks that can be tailored to mimic the mechanical and chemical features of various organs and tissues, they can interf.....»»
Men become less fertile with age, but the same isn"t true for all animals: Study
We take it for granted that humans find it more difficult to conceive as they grow older. But our recent study, which analyzed data from 157 animal species, found that male reproductive aging seems to be a lot less common in other male animals......»»
Q&A: Pork, pathogens and progress—a close look at PRRSV research
The pork industry provides people across different cultures a considerable source of protein, essential nutrients and a versatile ingredient for diverse culinary traditions. So, when the problem of porcine reproductive and respiratory syndrome virus.....»»
SPNS2 found to be directly exporting S1P for signaling, can be inhibited
When an enemy invades, defenders are ferried to the site to neutralize the marauders. In the human body, a protein carrier called SPNS2 transports S1P molecules from endothelial cells to rally immune cell response in infected organs and tissues......»»
Dyson"s Valentine"s Day sale finally brought the V12 Detect Slim back under $500
Plus, get the Dyson V8 Origin+ cordless vacuum for $299.99 or a refurbished Supersonic hair dryer for $249.99 as of Feb. 14. UPDATE: Feb. 15, 2024, 5:00 a.m. EST This post has been updated with the latest list of Dyson vacuums, air-purifyin.....»»
New study finds little-known toxic crop chemical in four out of five people tested
A new Environmental Working Group study has found chlormequat, a little-known pesticide, in four out of five people tested. Because the chemical is linked to reproductive and developmental problems in animal studies, the findings suggest the potentia.....»»
Are we about to find out the moon"s origin? Japan"s space agency says it may now have clues
An unmanned lunar spacecraft has captured and transmitted data analyzing 10 lunar rocks, a greater-than-expected achievement that could help provide clues about the origin of the moon, a Japan space agency official said Wednesday......»»
Studies find teenagers need better reproductive health education to tackle parenthood fears
Nearly half of teenagers are worried about having children and many lack knowledge about their reproductive health, find two new studies by University College London researchers......»»
New 3D printing method uses ice to build a template for artificial blood vessels in engineered tissue
Over 100,000 individuals in the United States are currently in need of organ transplants. The demand for organs, such as hearts, kidneys, and livers, far exceeds the available supply and people sometimes wait years to receive a donated organ. Approxi.....»»
Demography and reproductive rights are environmental issues: Insights from sub-Saharan Africa
Sub-Saharan Africa's population is growing three times faster than the rest of the world with an average of 4.6 births per woman in 2021. By comparison, the fertility rate in Canada was 1.3 births per woman in 2022......»»
Those free USB sticks in your drawer are somehow crappier than you thought
Rejected chips, hidden microSD cards plague the USB stick market. Enlarge / A microSD card of "unknown origin" is soldered onto a USB interface board to serve as makeshift NAND storage. (credit: CBL Data recovery) When a.....»»
Rejected chips, hidden microSD cards plague the USB stick market
Your stash of freebie USB sticks is perhaps even less reliable than you thought. Enlarge / A microSD card of "unknown origin" is soldered onto the USB to serve as makeshift NAND storage. (credit: CBL Data recovery) When.....»»
How air pollution harms pollination
Pollination, the transfer of pollen grains from the male to the female organs, is an essential part of reproduction for the majority of plants. For many of these plants, this transfer is carried out by insects in search of food—this is known as ins.....»»
Understanding jasmonic acid: A switch that activates autophagy in Arabidopsis petals
Organogenesis, an important aspect of flowering, helps reveal key processes of plant development such as the formation of floral organs, attainment of reproductive capability, and abscission leading to seed and fruit development......»»
How molecular systems at the origin of life may have evolved: Rise of the nanomachines
By attaching molecules together, scientists at Université de Montréal think they've found how molecular systems at the origin of life evolved to create complex self-regulating functions......»»
Anti-abortion group’s studies retracted before Supreme Court mifepristone case
A large number of other, non-retracted studies find mifepristone to be very safe. Enlarge / Mifepristone (Mifeprex) and Misoprostol, the two drugs used in a medication abortion, are seen at the Women's Reproductive Clinic, which.....»»
A new origin story for deadly Seattle fault
The Seattle fault zone is a network of shallow faults slicing through the lowlands of Puget Sound, threatening to create damaging earthquakes for the more than four million people who live there......»»
Study challenges classical view of the Antarctic Circumpolar Current origin and warns of its vulnerability
The Circumpolar Current works as a regulator of the planet's climate. Its origins were thought to have caused the formation of the permanent ice in Antarctica about 34 million years ago. Now, a study led by the University of Barcelona, the Instituto.....»»
Newly identified protein helps flowers develop properly
Flowers rely on a newly identified protein to develop properly with all of their organs, according to the research team who made the discovery. The team, led by Penn State biologists, identified the protein in the model plant species Arabidopsis and.....»»
AI helps reveal the ancient origin story of floral colors
New research led by Monash University experts used computer simulations to reveal the ancient link between bees and the evolution of colors in flowers. The research, published in Proceedings of the Royal Society B, simulated the landscape of the firs.....»»