egg in Biological News

New research finds possible genetic link to cause of pregnancy loss and disorders

... and the research team found that if a mother's egg cell has a mutation in just one copy of a gene, ... when Bub1 is mutated, sometimes producing an egg with an extra chromosome or an egg with a missing chromosome. The team linked the ...

New, less invasive genetic test greatly improves pregnancy rates in older women with poor prognosis

... polar bodies, tiny cells that are a by-product of egg development. The chromosomes of polar bodies provide an indication of whether the corresponding egg is normal or abnormal; if the polar bodies have ... information about the chromosome content of an egg and its resulting embryo than other alternatives, ...

Drugs needed to preserve eggs for reproduction need to be given in stages

... These dramatic size shifts can literally rip an egg apart or, at the very least, reduce the chances ... works best in monkeys. The drug penetrated the egg membrane faster and got out faster, Dr. Eroglu ... putting some in the medium around the egg and a few minutes later adding a little more when ...

The egg makes sure that sperm don't get too old

... that a fertilising sperm can get help from the egg to rejuvenate. The result is an important step ... of the father. One possible explanation is that egg cells have a unique ability to reset the age of a sperm. "We are the first to show that egg cells have the ability to rejuvenate other cells, ...

Statement by the Egg Nutrition Center and American Egg Board on Diabetes Care study on egg consumption

... Women's Health Study found an association between egg intake and increased incidence of type 2 diabetes ... supporting the health and nutritional benefits of egg consumption, this finding is unexpected. However, ... of Nutrition and Food Safety Education at the egg Nutrition Center. "Eggs provide many nutrients ...

Male dinosaurs may have been prehistoric babysitters, study shows

... to only 5 percent of mammalian species who do the egg watching. The team examined three types of ... females were focused strictly on the feeding and egg laying," Moore adds. "And more and more evidence points to the male as the egg caretaker. "The findings are surprising," he ...

New study 'pardons' the misunderstood egg

... Risk Analysis (1) estimates that eating one egg per day is responsible for less than 1 percent of ... the risk of heart disease associated with egg consumption compared to modifiable lifestyle risk ... The study found that the consumption of one egg per day contributes less than 1 percent of heart ...

Red-eyed treefrog embryos actively avoid asphyxiation inside their eggs

... Agalychnis callidryas , lay jelly-covered egg clutches on leaves overhanging tropical ponds. ... the pond below where predators lurk. But as each egg matures, and embryos need more oxygen, less and ... also induced embryos to lose their gills in the egg -- and was thus able to directly measure and ...

Egg whites solve the 3-D problem

... in her laboratory, found a solution chicken egg whites. Their process has garnered attention in ... Oesterreich. "When you put these cells in the egg white preparation, it forms a structure like a ... a baby chick can grow in three dimensions in an egg shell without any external support," said ...

Syracuse University partners with Serum Institute of India to develop vaccines for children

... "It's like frying an egg," Doyle says. "The egg white, which is a protein, is clear when you crack the egg into a pan. When the egg heats up, ...

Egg P bodies protect maternal gene messages

... in P bodies (processing bodies). P bodies in worm egg cells, however, are message protectors, according ... messages (mRNAs), which won't be read until the egg is fertilized and the embryo starts to develop. ... types of P bodies arising at different stages of egg development, and a fourth type in embryos, each ...

Adults who eat eggs for breakfast lose 65 percent more weight

... diet." Significant Weight Loss Related to egg Breakfast Compared to the subjects who ate a ... who consumed a bagel breakfast The egg and bagel breakfasts provided the same number of ... levels in subjects who ate either the bagel or egg breakfasts. These findings add to more than 30 ...

World's smallest snake found in Barbados

... of other types of animals, usually lay only one egg or give birth to one offspring. Furthermore, the ... to this pattern. It produces a single slender egg that occupies a significant portion of the ... "If a tiny snake were to have two offspring, each egg could occupy only half the space that is devoted ...

W.M. Keck Foundation grant funds reproductive science research

... and early embryonic development. The egg and sperm unite at the time of fertilization and ... ultimately forming a new individual. How do the egg and sperm mature, and what is the underlying ... research is focused on an unexplored area of egg and sperm biology, namely, the relationship of ...

How birds spot the cuckoo in the nest

... began to understand how hosts recognise a cuckoo egg in the nest. Marcel Honza from the Academy of ... whether altering the reflected UV spectrum of an egg would affect a bird's ability to recognise it as ... Would a blackcap recognise and evict an impostor egg if the reflected UV spectrum were different from ...

Nanotubes could help study retrovirus transmission between human cells

... because they used a composite lipid called egg PC that requires unnecessarily high energies to bend into a tubular shape. egg PC is inexpensive, readily available, and offers ... pure lipid requiring half the bending energy of egg PC. She was trying to generate nanotubes by a ...

Fruit fly helps identify protein critical to eggshell formation that may be pesticide target

... to maintain the structure," she says. "If the egg does not have external support, it would pop like ... It's very soft." The membrane also helps keep the egg from drying out. Without palisade, a key ... vitelline membrane won't form properly, so the egg won't survive anyway," Dr. LeMosy says. ...

Reproductive plasticity revealed: Neotropical treefrog can choose to lay eggs in water or on land

... frog makes a behavioral decision to lay egg masses aquatically in a pond or terrestrially on ... of tree frogs to choose the best environment for egg development avoiding either aquatic predators or ... forest ponds the mating frogs laid terrestrial egg masses, as expected from previous research. In a ...

Statement by the American Egg Board and Egg Nutrition Center on AJCN study on egg consumption

... suggests an association between high egg consumption and all-cause mortality, an unusual ... including saturated fat. In addition, the high egg consumers exhibited other lifestyle and dietary ... demonstrated there is no relationship between egg consumption and cardiovascular disease risk. This ...

UCR-led research team uses tiny wasp to wipe out major agricultural pest in Tahiti

... sharpshooter eggs by drilling a tiny hole in the egg through which the parasite lays its own egg. The wasp larva that hatches from the egg then eats the inside of the glassy-winged ... larva completes its development inside the host egg and then emerges as a tiny winged parasite that ...

Science, not romance, controls mating at Smithsonian's National Zoo

... Scientists at the National Zoo used a telemetric egg placed under the bird to learn more about how ... the rate of turning, sending the data from the egg to a receiver that records data on each egg for 24 hours a day. The Panamanian golden ...

Biologists find unusual plant gene: abstinence by mutual consent

... of the male reproductive sperm cell to the female egg cell. Fertilization requires fusion of the sperm and egg cells. In flowering plants, the male pollen tube ... cells. Once the pollen tube gets close to the egg cells, fertilization requires the bursting of the ...

Oosight microscope enables embryonic stem cell breakthrough

... And that, we found, was very detrimental for egg quality. The Oosight uses liquid-crystal ... spindle out of the egg. You cant manipulate the egg while looking at a computer screen. You have to ... during development back to the beginning, at the egg stage without hurting the egg, Keefe says. ...

New evidence for female control in reproduction

... In the traditional view, competition for the egg is male-oriented, with sperm themselves deciding which fertilizes the egg by being the faster swimmer. With post-copulatory ... as well as cloning. Both techniques rely on egg fertilization outside of their finely-tuned ...

Engineered eggshells to help make hydrogen fuel

... cost," he said. Before they could grind up the egg shell, the engineers needed to remove the ... "We like that our technology can help the egg industry to dispose of its waste, and at the same ... impact." Fan is currently working with a major egg company to produce large quantities of the ...

A unique arrangement for egg cell division

... very early on during the maturation of the egg cell in the ovary. In a cell division process that is unique to egg cells, half of the chromosomes are eliminated from the egg before it is fertilised. Using a powerful ...

Protecting cells from their neighbors

... edition of EMBO Reports . In the first hours of embryonic life, the egg cells show intense gene transcription activity to initiate development, ... Embryos, that did not survive, showed a cavity in one of the poles of the egg in which cells were lacking. "It was thought that this was a problem ...

Happier, healthier, more productive hens on omega-3?

... Council (BBSRC) and industrial partner, Noble Foods, the UK's leading egg production company. The three-year research project will investigate the ... systems this represents a serious welfare issue for the poultry and egg production industry. Concern about the welfare of laying hens housed ...

Plastics chemical retards growth, function of adult reproductive cells

... A healthy, mature follicle, called an antral follicle, includes a single egg cell surrounded by layers of cells and fluid which support the egg and produce steroid hormones, said University of Illinois veterinary ...

ESHRE launches international study of polar body screening

... of 23 chromosomes in polar bodies, tiny cells that are a by-product of egg development, in collaboration with BlueGnome, a DNA technology company ... donating their eggs. By biopsying polar bodies at an early stage of egg development, the researchers believe that not only are they using a less ...

American Chemical Society Weekly PressPac -- April 8, 2009

... Platt and colleagues note in the new study that sperm cannot fertilize an egg immediately after entering the female reproductive tract. Sperm must ... the future, dietary supplements and functional food products obtained from egg whites, soybeans, and oats may offer safer alternatives to conventional ...

New research shows high-quality protein in eggs contributes to power, strength and energy

... influences muscle mass, strength and function in people of all ages. One egg provides more than six grams of high-quality protein (13 percent of the ... our bodies need to build and maintain muscle mass. In fact, the quality of egg protein is so high that scientists frequently use eggs as the standard for ...

News from the November 2008 Journal of the American Dietetic Association

... remain uncontrolled." Heart Failure Risk Higher in High-Fat Dairy and egg Eaters; Lower in Whole Grain Eaters People with high whole-grain intake ... categories (whole grains, fruits/vegetables, fish, nuts, high-fat dairy, egg and red meat). During that time, 1,140 heart failure hospitalizations ...

UT Knoxville professor finds unexpected key to flowering plants' diversity

... as angiosperms -- to quickly and efficiently move sperm from pollen to egg through a part of the plant was the key to their evolutionary diversity. ... plants, though, pollen tubes are able to cover longer distances to the egg by essentially "squeezing" between cells. It is a trait that Williams says ...

Human embryonic stem cells developed from 4-cell embryo; world first may lessen ethical concerns

... stages of embryonic development. About 24 hours after fertilisation the egg divides into two cells. Division into four cells occurs after 48 hours. After 96 hours, at the morula stage, the fertilized egg has divided four to five times. During this time the size of the embryo ...

Study finds healthy intestinal bacteria within chicken eggs

... hypothesize that the bacteria penetrate the surface of the shell to the egg white, which is then ingested by the developing embryo. Study co-author ... egg) to get better results." The idea that embryos are sterile in the egg and that chicks acquire their intestinal bacteria after hatching goes back ...

Healthy parents provide clues to survival of young haddock on Georges Bank

... The researchers analyzed various factors that control recruitment, from egg and larval retention, feeding conditions for larvae, size of juveniles in ... colleagues suggest a new paradigm, that the condition of parents affects egg size and fertilization success through the most difficult growth-mortality ...

New clues to how proteins dissolve and crystallize

... that some salts (ionic compounds) aided the solution of proteins in egg white, some caused the proteins to destabilize and precipitate, and others ... concentration." Hofmeister himself discovered that sodium salts-out egg white protein more efficiently than potassium, as does calcium. It's a ...

Rare North Island brown kiwi hatches at the Smithsonian's National Zoo

... the Smithsonians National Zoo Bird House. Keepers had been incubating the egg for five weeks, following a month long incubation by the chicks father, ... National Zoo geneticists. Using DNA samples swabbed from the inside of the egg and from the birds beak, the geneticists hope to decipher its sex in the ...

Ants and avalanches: Insects on coffee plants follow widespread natural tendency

... with a sinister name: the decapitating fly. The parasitic fly lays its egg on the thorax of an ant; the egg hatches and the fly larva migrates into the ant's head capsule where it ...