Sentences with phrase «reproductive biologist»

And then there is the EPA - enhanced pig genetically engineered by Randall Prather, a livestock reproductive biologist at the University of Missouri — Columbia National Swine Resource and Research Center.

«This is an important and fundamental paper for understanding human germ - line cells and finding the basic information about human germ - cell biology,» says reproductive biologist Evelyn Telfer of the University of Edinburgh, UK.

In 2005, a team led by reproductive biologist Michael Skinner of Washington State University in Pullman reported in Science that the fungicide vinclozolin, an endocrine - disrupter used to spray vineyards and other crops, causes fertility defects in the male offspring of female rats treated with the chemical.

The work was led by reproductive biologist Michael Skinner of Washington State University in Pullman, whose lab has been studying vinclozolin, a fungicide used in the wine industry.

In other research, by reproductive biologist Patricia Hunt of Washington State University, female mice exposed to low amounts of BPA in the womb — amounts deemed «environmentally relevant» — had high levels of genetic errors in the eggs they produced.

In 2008, reproductive biologist Evelyn Telfer and colleagues at the University of Edinburgh managed the first half.

«The report is quite exciting because it represents the fulfilment of a goal held by many reproductive biologists over many years,» says Mary Ann Handel, an expert in reproductive genetics at the Jackson Laboratory in Bar Harbor, Maine.

But why the alarm clock goes off for one primordial follicle and not another is an open question, says reproductive biologist David Pépin of Massachusetts General Hospital and Harvard Medical School.

Harvard Medical School reproductive biologist Jonathan Tilly made headlines in March when he suggested mammalian ovaries contain stem cells that give rise to new potential eggs, or oocytes, throughout adulthood.

In a statement sent to Nature, reproductive biologist Shoukhrat Mitalipov at the Oregon Health & Science University in Portland, who pioneered spindle transfer in primates and is currently seeking approval to perform human trials, said that the strict US regulations are forcing researchers to move trials into other countries.

«The scientific and ethical basis of these experiments is totally flawed,» says reproductive biologist Lynn Fraser, a past chairman of the European Society.

She worked with reproductive biologist and endocrinologist Susan Nagel of the University of Missouri, Columbia, whose laboratory collected the mouse mammary tissue samples exposed to the UOG chemical mix.

Led by reproductive biologist Alex Travis, the engineering effort focuses on a chain of enzymes that metabolize glucose molecules into the biological fuel ATP (a process known as glycolysis), which enables sperm locomotion.

«God knows what's in there,» says reproductive biologist Mary Ann Handel of the Jackson Laboratory in Bar Harbor, Maine, «but it's probably good stuff.»

George Seidel, animal reproductive biologist, Colorado State University, Fort Collins: There are cloned bulls producing semen that's being sold.

«This is a very interesting finding,» says reproductive biologist James Robl of the University of Massachusetts, Amherst.

«It's technologically a marvelous paper,» adds reproductive biologist Harvey Florman of the University of Massachusetts Medical School at Worcester.

PULLMAN, Wash. — Washington State University reproductive biologists have ruled out one of the leading thoughts on why older women have an increased risk of miscarriages and children with birth defects.

«This study fills a void in our understanding of the mechanism of regression of the Wolffian duct,» reproductive biologists Patricia Donahoe and David Pepin of Harvard Medical School said in an e-mail.

Reproductive neuroendocrinologist Andrea Gore and her husband, evolutionary biologist David Crews — both at the University of Texas at Austin — examined the sexual inclinations of 12 male and 12 female 90 - to 120 - day - old rats, great - grandchildren of females injected during pregnancy with vinclozolin by reproductive biologist Michael Skinner.

«We know that sperm is very susceptible to free radical damage,» says reproductive biologist and co-author Sheena Lewis.

John Eppig, a reproductive biologist at Jackson Laboratory in Bar Harbor, Maine raised the concern that no animal studies with a control group have been done — a standard practice with experimental medical procedures — yet somehow the procedure is being tried on humans.

Pablo Ross, a reproductive biologist at the University of California - Davis, refutes the idea, telling NPR,

Lifestyle and environment can also influence sperm quality, Dr Mark Green, a reproductive biologist at the University of Melbourne told ABC.

ACCESS DENIED After decades of research, reproductive biologists are on the verge of developing new birth control options that stop sperm from maturing or save a woman's eggs for later.

«Investigators of aging in humans have been interested in studying somatic aging, and they've been interested in looking at the effects of age on fertility, but, in general, there haven't been any people trying to tie those two lines of investigation together,» saysTerry Hassold, a reproductive biologist at Washington State University in Pullman who was not involved in the study.

«It's been a debate for many years, whether there were indeed cells in the adult ovary capable of forming new eggs,» says Evelyn Telfer, a reproductive biologist at the University of Edinburgh who wasn't part of the new study.

«This work really forms a basis of what people will be studying in the future,» says Renee Reijo, a reproductive biologist at the University of California, San Francisco.

In as little as a decade, foolproof contraception could be as effortless as an annual flu shot, predicts Peter Sutovsky, a reproductive biologist at the University of Missouri at Columbia.

The success could make it easier for wildlife conservationists to help such endangered species as the African painted dog or the Ethiopian wolf, says study coauthor Alexander Travis, a reproductive biologist at Cornell University.

In a breakthrough that sent shock waves through fertility clinics, Jonathan Tilly, a reproductive biologist at Harvard Medical School, released a study in March that suggests doctors may be able to boost women's supplies of eggs and help them bear children long after the normal onset of menopause.

Jay Cross, a reproductive biologist at the University of Calgary in Alberta, Canada said work by his lab showed that the genetic disregulation in clones occurs in very specific and limited tissues.

Ali Honaramooz, a reproductive biologist at the University of Saskatchewan in Saskatoon, Canada, says that the technique could aid prepubescent boys about to undergo cancer therapies that destroy fertility.

Patricia A. Martin - DeLeon, a reproductive biologist at the University of Delaware, has witnessed this behavior many times in her studies of fertility in mice, the closest genetic model to humans (and with a much faster reproductive cycle).

Albertini, a reproductive biologist at the University of Kansas Medical Center in Kansas City, felt that it was important to publish Fan's paper to educate scientists and clinicians.

That dream moved closer to reality last January when Roger Gosden, a reproductive biologist at Eastern Virginia Medical School in Norfolk, announced that his team had transplanted into seven rats ovaries and fallopian tubes that had been frozen and stored in liquid nitrogen.

But Mary Herbert, a reproductive biologist at the University of Newcastle, UK, who is part of a team pursuing mitochondrial replacement, says that mitochondria behave very differently in embryonic stem cells compared to normal human development.

That rhino eggs are in short supply needn't be a problem, says Pasqualino Loi, a reproductive biologist at the University of Teramo in Italy, who, more than a decade ago, used domestic sheep as a source of eggs and surrogates to clone an endangered sheep relative, the mouflon.

«We know from animal models that there are critical periods during early development when cells are rapidly dividing and forming the circuitry through which cells will communicate with each other to form various tissues of the body,» said Retha Newbold, a reproductive biologist at the National Institute of Environmental Health Sciences in North Carolina.

Previously, Jonathan Tilly, a reproductive biologist at Massachusetts General Hospital in Boston, found a striking correlation between high levels of a protein called Bax (a key regulator of apoptosis) and cell death in healthy ovaries.

Sarah Robertson, a reproductive biologist at the University of Adelaide in Australia, and her then - graduate student John Bromfield (now a reproductive biologist at the University of Florida) wanted to examine how seminal fluid could affect fetal development and the future the health of offspring long after sperm meets egg.

Despite the protective effect of circumcision, condoms remain a key component of HIV prevention, because there is «no surgical way to remove all of the inner foreskin,» cautions Roger Short, a reproductive biologist at the University of Melbourne in Australia.

The study shows that embryo transport is dependent on chemical «fine - tuning,» says Vincenzo Di Marzo, a reproductive biologist at the National Institute of Molecular Biology in Naples, Italy.

Eduardo Roldan, a reproductive biologist at the Museo Nacional de Ciencias Naturales and an author on the study, has already given a lot of thought to what questions should be addressed next.

W. Steven Ward, a reproductive biologist at the University of Hawaii at Manoa says that the study indicates a new role for protamines.

«There were an alarming number of miscarriages and abnormalities with the technique,» says Roger Gosden, a reproductive biologist at the Leeds General Infirmary.

«It's the first time we've had any detailed analysis of the human zona [pellucida],» says Christopher Barratt, a reproductive biologist at the University of Dundee in the United Kingdom.

These feeder cells, derived from zebrafish testicular cancer cell lines, promote the growth of spermatagonia and stimulate them to mature into functional sperm,» said Dr. Sakai, the study's senior author and a reproductive biologist.