Sentences with phrase «after fertilization of»

«We were able to show by live cell imaging that polarization of the cell occurs after fertilization of the egg cell, and both MTs and F - actin play a role in inducing asymmetric cell division to form the plant's body axis,» says Ueda.

If the pregnancy becomes after fertilization of one egg you will have identical twins, if the ovulation is dual, you will have fraternal twins.

The deciduous teeth are formed not only after birth, but already in the womb together with the jaw from about the 7th week after fertilization of the egg.

Not exact matches

So researchers at the NIH in 2013 — equipped with the latest tools of science — decided to check this number by instead measuring a pregnancy from the moment of ovulation (fertilization usually occurs within 12 to 24 hours after an egg is released).

The college considers the use of FDA - approved, morning - after pills (Plan B, ella) and intrauterine devices (IUDs) immoral since such contraception may work after fertilization.

After months of discussion, the group drafted a call to ban all human cloning and to limit ESCR to the use of the «excess» embryos created in the process of in vitro fertilization (IVF).

It is impossible to draw a line anywhere after the moment of fertilization and say before this point the creature is not human but after this point it is.

«There is substantial medical evidence that an unborn child is capable of experiencing pain at least by 20 weeks after fertilization, if not earlier,» states H.R. 36, introduced by Arizona Republican Trent Franks.

But those who claim some methods of contraception are abortifacients give it that classification becaue the ending of pregnacy occurs after fertilization.

Some groups consider conception is the fertilization of the ovum / egg into a zygote during the first day or two after insemination.

And for the majority of embryologists who stubbornly believe that life begins at fertilization rather than implantation, a drug or device whose contraceptive action occurs after fertilization does cause an abortion.

Where is the clear line in a progression from (1) using animal insulin to treat diabetes, to (2) using gene remodeling techniques to grow insulin in a host bacterium that will reproduce rapidly and from which a plentiful supply of insulin can be harvested, to (3) genetic surgery to replace the defective gene in a person diagnosed as diabetic, to (4) genetic surgery immediately after fertilization in order to replace the defective gene and alter the germ cells which would otherwise have transmitted the disease to one's offspring?

I never intended to challenge the church when my wife and I pursued in vitro fertilization in an effort to expand our family after a decade of unsuccessful infertility treatments.

Reproductive potential of mature oocytes after conventional ovarian hyperstimulation for in vitro fertilization

After the removal and fertilization of eggs with the use of in vitro fertilization (IVF), some women with multiple embryos (fertilized eggs) may decide to have a single embryo transferred to the womb even when multiple embryos are available (elective single embryo transfer eSET).

Usually, your body will begin to produce the hormone a week or so after fertilization, when the egg implants on the wall of your uterus.

If you got pregnant after using in vitro fertilization (IVF) or another assisted reproductive technology (ART), your reproductive endocrinologist will help you determine your due date based on the age of the embryo and the date of the transfer.

Then after, natural fertilization of the egg takes place.

The technique of CCS after conventional in vitro fertilization is to grow embryos to day 5 - 7, the blastocyst stage.

PFC offers CCS as an option for patients undergoing in vitro fertilization (IVF), as a treatment for recurrent miscarriage, prevention of aneuploidy in pregnancy, and for women that wish to improve implantation rates, reduce miscarriage rates, and reduce the risk of multiple pregnancy after IVF.

Soon after the conception, the zygote (product of fertilization of egg with sperm) undergoes rapid divisions.

There are various biological reasons as to why an ovum can split and given that the splitting took place after fertilization then this will lead to the formation of identical twins.

The process of implantation starts on the 6th day after fertilization, and by the 12th day, it is complete.

Doctors will usually recommend that a couple have unprotected sex for a full year before seeking In - Vitro Fertilization (IVF) treatment if the woman is under 35; after 35, your doctor might send you to a specialist after 6 months of consistent unprotected sex.

ECPs are a regimen of hormone pills that can prevent pregnancy after unprotected intercourse by temporarily blocking ovulation, interfering with fertilization, or thinning the lining of the uterus to keep a fertilized egg from becoming implanted.

If an egg is fertilized, it burrows into the lining of the uterus, usually about six to eight days after fertilization.

It is the product of the ripened ovule of gymnosperm and angiosperm plants which occurs after fertilization and some growth with in the motherplant.

Instead of doing some body sculpting, the gene sup - 35 doses the eggs with a toxin that will kill them after fertilization, two postdocs in the Kruglyak lab discovered.

Because of this limitation, researchers have theorized that inherited methylation, also referred to as parental imprinting, largely remains stable throughout development, except during two important developmental milestones: after fertilization and during the creation of sperm and egg cells.

The last piece of evidence together with the fact that the parents do not carry the alterations suggest that the extra copies of genes may have occurred either in the sperm or the egg, the parent's germ cells, and before or very early after fertilization.

The flowers blossomed for more than a week, instead of shriveling 2 days after fertilization.

Using fluorescent labels, they were able to track the fates of marked and unmarked chromosomes under the microscope, from egg cells and sperm to the dividing cells of embryos after fertilization.

Scientists from the Institute of Molecular Biotechnology (IMBA) in Vienna, Austria, have discovered how an embryo's genomic integrity is safeguarded during the first 24 h after fertilization.

This problem can become even bigger for biofuels like corn ethanol that emit greenhouse gases at every step, from laughing gas emanating from corn fields after fertilization to the CO2 from the fermentation of kernels into ethanol.

«Crazy sperm forms are evolving because female reproductive tracts are evolving that bias fertilization in favor of these weird, specific traits,» Pitnick says, pointing to a female's active role in selecting preferred sperm after mating.

The team, headed by biologist Miodrag Stojkovic, who has labs at the Principe Felipe Research Centre in Valencia, Spain, and at a company called Sintocell in Serbia, obtained 161 embryos that had been donated for research at the University of Newcastle in the U.K. Of these, thirteen had stopped developing at 6 to 7 days after fertilization, when they were at the 16 - 24 cell stage, and 119 had stopped developing a few days after fertilizatioof Newcastle in the U.K. Of these, thirteen had stopped developing at 6 to 7 days after fertilization, when they were at the 16 - 24 cell stage, and 119 had stopped developing a few days after fertilizatioOf these, thirteen had stopped developing at 6 to 7 days after fertilization, when they were at the 16 - 24 cell stage, and 119 had stopped developing a few days after fertilization.

Just a day after fertilization, embryonic brains begin sending signals to far - off places in the body, helping oversee the layout of complex patterns of muscles and nerve fibers.

However, we know that there are other types of changes that might occur in a very, very minute number of situations, where the actual DNA sequence might differ due to mutations that occur even after fertilization...

One of the ideas that Williams is interested in continuing to pursue is the conflict between the ecology of pollen dispersal (the free - living phase of pollen ontogeny) and the ecology of pollen tube growth after pollination (where pollen is protected and competes with other pollen for fertilization success).

The proportion of triplets or more related to medical assistance has actually dropped from a peak of 84 percent in 1998 after in vitro fertilization (IVF) guidelines discouraging implantation of three or more embryos took effect that year, the study reports.

Twenty - two years after the world's first test - tube baby was conceived through in vitro fertilization, science is giving men and women — at least those who can afford the steep medical fees — increasing flexibility to alter the seasons of their lives.

They found that the organisms — which are about 1 / 100th the diameter of a human hair — build a complete calcium carbonate shell within six hours, about 12 hours after fertilization.

About half of women will get pregnant after taking these drugs, but for those who do not, doctors often recommend other medications — such as injectable hormones — or in vitro fertilization.

After fertilization, maternal and paternal genomes erase some of the epigenetic memory of the previously differentiated states in order to facilitate the beginning of new life as the zygote.

It seems like the chromatin architecture is reorganized after fertilization, and that this reorganization happens differentially for the maternal and the paternal genomes,» explained Johanna Gassler, PhD student at IMBA and one of the first authors of the study.

Using a newly developed method researchers at the Institute of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA) have been able to shed light on the complexity of genome reorganization occurring during the first hours after fertilization in the single - cell mammalian embryo.

During the first hours after fertilization, the two separate genomes undergo reprogramming events that presumably function to erase the memory of the differentiated cell type and establish a state of totipotency.

«What these results demonstrate is that a relatively short dietary disruption in nutrients that are available can have an impact on the ovary, the quality of the egg that the ovary produces, and the quality of the embryo and placenta that the egg develops into after fertilization,» Diaz said.

Nagoya, Japan — Dr. Daisuke Maruyama and Professor Tetsuya Higashiyama at the Institute of Transformative Bio-Molecules (WPI - ITbM) of Nagoya University and the JST - ERATO Higashiyama Live - Holonics Project along with their international team have shown by live - cell imaging techniques that flowering plants, such as Arabidopsis thaliana undergo a cell to cell fusion to prevent the attraction of the second pollen tube after fertilization has occurred.

Blastocysts are balls of about 200 cells that form about five or six days after fertilization.