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Tag: "fertilized" at biology news

Influenza vaccine uses insect cells to speed development

...o 2 months." Today's flu vaccines are prepared in fertilized chicken eggs. The eggshell is punctured, and the influenza virus is injected into the fluid surrounding the embryo. The egg is then resealed, the embryo becomes infected, and the resulting virus is then harvested, purified and used to produce the vac...

First frozen egg baby born in Canada

...r a period of two months, the eggs were thawed and fertilized with her partner's sperm through in-vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI), and the resulting embryos implanted in her uterus. "The patient went through an uncomplicated full-term pregnancy and straightforward delivery...

Technique may allow cancer patients to freeze eggs, preserving fertility before starting treatment

...gnant, the vitrified eggs would be warmed and then fertilized with male sperm. The fertilized eggs would then be transferred to the uterus in the same procedure that's used successfully when cou...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

..." Matson said. "The entire valley is irrigated and fertilized in very short windows of time during a six-month cycle. The excess water from irrigation runs off through streams and channels into the estuaries and then out to sea." Matson and her colleagues wondered if each fertilization and irrigation event wou...

Man-made wetland's effectiveness similar to natural marsh

... acted as an effective sink, even when runoff from fertilized fields was especially high," Mitsch said. "Of course, that could change as time goes on, however." Most of the water entering the wetland came as runoff from farm fields, and nitrate and phosphorus levels all peaked after fertilizer application in t...

Human Eggs Can Develop From Ovarian Surface Cells In Vitro

...on to become mature human eggs -- capable of being fertilized and developing into an embryo. These in vitro find...several cell types used in stem cell research, and fertilized eggs produced in this way could produce cells capable of giving rise to embryonic stem cells for use...

Stem cells in bone marrow replenish mouse ovaries

...ollowing bone marrow transplants can mature and be fertilized to give rise to viable mouse pups, the findings provide an important first step toward investigating such potential for restoring fertility. In addition, the findings open the door for future studies examining whether restoration of ovaries could pos...

Scripps research scientists identify infertility molecule

...it must be able to fertilize the egg. Finally, the fertilized egg must become a viable embryo and implant in the...ulation to having their eggs harvested by doctors, fertilized by their partner's sperm outside their bodies, and finally having the early embryos implanted direct...

Fragment of yellow fever virus may hold key to safer vaccine

...riations of the weakened virus strain now grown in fertilized chicken eggs. ...

High carbon dioxide levels spur Southern pines to grow more needles

...s because one area of the FACE experiment had been fertilized during her study period. "The viability of leaf ar...leaf counts in CO2-treated trees, the most heavily fertilized sites conversely suffered the highest needle losses under drought conditions. "They put out a lot of...

Yale scientists decipher 'wiring pattern' of cell signaling networks

... for understanding both human development from the fertilized egg to full grown organism, and for drug discovery targeting human diseases. ...

Clawed frog helps Fanconi anemia research make leaps

...ne in mammalian cells. Since a Xenopus egg isn't fertilized until after it is laid outside the body of the female frog, it's in a relative state of suspension until it is fertilized. During this time, when the cell cycle is arrested, scientists can use chemicals and a centrifuge machine to keep its DNA from r...

Cloned stem cells prove identical to fertilized stem cells

...ll has been derived from a cloned embryo or from a fertilized embryo," says Whitehead Member Rudolf Jaenisch, se...se surviving stem cells by transplanting them into fertilized blastocysts and then observing the overall health of the resulting animal. Although these animals ge...

Single microRNA causes cancer in transgenic mouse

... with an enhancer, to promote its expression, into fertilized eggs inside a pregnant mouse. The researchers then screened the offspring to find those that had incorporated miR155 into their genomes and followed them to see what effect miR155 might have. Within three weeks, the transgenic mice developed greatl...

Insects that produce males from unfertilized eggs reveal a surprising cellular feat

...ation: Unfertilized eggs develop into males, while fertilized eggs become females. But the development of an unf...into making these centrosomes, and if the egg gets fertilized they don't use them--the centrosome from the sperm is used preferentially." Centrosomes remain some...

Researchers now able to look deep into heart to view triggers of a heart's beat

...ation: Unfertilized eggs develop into males, while fertilized eggs become females. But the development of an unf...into making these centrosomes, and if the egg gets fertilized they don't use them--the centrosome from the sperm is used preferentially." Centrosomes remain some...

Component in soy products causes reproductive problems in laboratory mice

... that remain in clusters are less likely to become fertilized based on previous research. The largest differenc...ne good healthy single oocyte that is ovulated and fertilized by a sperm to get a healthy baby. Genistein seems to have a way of making this task very difficult,"...

US woman gives birth to baby from world's first frozen donor egg bank

...gs are shipped anywhere in the world to be thawed, fertilized and transferred as an embryo to the waiting woman who wishes to experience the pregnancy and birth of her baby. "We're very happy this technology was available," Wendy Kennedy said Sunday morning, a day after the birth of their daughter. "If it were...

Genetic tug of war determines sexual differentiation

Whether or not a fertilized mammalian egg ultimately develops into a male or f... the National Institutes of Health. In mammals, a fertilized egg with two X chromosomes will become a female, while an egg with an X and Y chromosome will become...

Tropical forest CO2 emissions tied to nutrient increases

...cluded a series of 25 meter-square plots that were fertilized with phosphorus, nitrogen, or a combination of the two, said Cleveland. Soil respiration was measured using plastic tubes in the ground running into vented, closed chambers. According to the National Academy of Sciences, temperatures on Earth have r...

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