Sentences with phrase «form embryos»

«The technology remains at an early stage, and much more work is needed to make sure that the technique is safe and optimized before we ascertain whether these eggs remain normal during the process, and can be fertilized to form embryos that could lead to healthy babies,» says Ali Abbara, an endocrinologist from Imperial College London who didn't work on this new study.

In the lab, the herbicide 2,4 - dichlorophenoxyacetic acid (sold as weed killer and called 2,4 - D) can prompt cells in culture to elongate, build a new cell wall, and start dividing to form embryos.

Most citrus trees, for example, can form embryos from the tissues surrounding the unfertilized gametes — a feat no animal can manage.

For identical twins, the number of placentas will depend on when the fertilised egg split to form the embryos.

Their technique, which involves taking a woman's mature oocyte (egg) and fertilizing it with sperm in a petri dish to form an embryo, led to a U.K. woman's giving birth to the first «test tube baby» in 1978.

The formation of this two - layered ball of cells, which goes on to form the embryo and placenta, is thought to be a good indication that the cells will develop further in the uterus.

Partially formed embryos float silently, bathed in amniotic fluid.

We take a human embryonic stem cell, and we inject it into a monkey blastocyst [the first 130 or so cells in a newly formed embryo].

During the process of plant body formation, the zygote elongates in the vertical direction and divides to form the embryo.

The finding that normal fertilization can result in embryos containing cells with different parental sets of chromosomes is a new mechanism for chimerism, which was previously thought to occur only as the result of fertilization errors, for example, the fusion of multiple sperm or eggs to form an embryo.

In experiments with lab mice, she discovered how small groups of cells dance about to form an embryo and how a layer of cells surrounding the embryo itself, previously thought of as nothing more than a protective cloak, orchestrates the formation of an embryo's body parts.

Astronomers discovered the molecules» faint millimeter - wavelength «glow» emanating from two dense star - forming embryos in the LMC, regions known as «hot cores.»

When an egg and sperm unite to form an embryo, DNA from the two combine to form the DNA of the embryo.

Not exact matches

The embryos, which were genetically modified to prevent them from growing their own pancreases, were injected with mouse pluripotent stem cells that formed into a pancreas.

Tonight I ask you to pass legislation to prohibit the most egregious abuses of medical research: human cloning in all its forms, creating or implanting embryos for experiments, creating human - animal hybrids, and buying, selling, or patenting human embryos.

Then they would inject human stem cells into the pig embryo in hopes that the human stem cells would bridge the gaps of the missing pancreas gene and form a human pancreas.

At Psalms 139, the man David was inspired to write that «your (God's) eyes saw even the embryo (comprising 56 days) of me, and in your book all its (the human body) parts were down in writing (our DNA), as regards the days when they were not formed (before becoming a fetus), and there was not yet one (complete organ) among them.»

Or how was a man named David, a simple shepherd at one time some 3,000 years ago, able to specify that we are formed by means of a set of detailed instruction within our DNA, that makes each of us unique, saying: «Your (God's) eyes saw even the embryo (up through 56 days after conception) of me, and in your book (the instructions in DNA) all its parts were down in writing, as regards the days when they were formed and there was not yet one (organ) among them»?

In the introduction, Porphyry suggests that those speculating on the nature of the embryo can be divided into four camps according to their views on the moment of ensoulment: with the creation and release of semen; when the embryo is first formed (between the first thirty and forty - two days of pregnancy); when the embryo first moves (between the first three and four months of pregnancy); and, finally, at birth.

Endangered spe - cies in any form to include their eggs, embryos are protected by the force of law.

Endangered species in any form to include their eggs, embryos are protected by the force of law.

Even in embryo form it gives enough content to «prophetic guide» to confirm the value of the metaphor.

Aristotle, noting that the human embryo in its earliestform did not have a human form, head, body and limbs, imagined that it had an animal soul which was replaced by a spiritual soul as soon as the human form definitely became apparent.

Barnes and others think that the word most aptly denotes the embryo, or the fetus, «where all the members of the body are as yet folded up, or undeveloped; that is, before they have assumed their distinct form and proportions.»

As soon as the nervous system forming in the embryo begins to function as a whole — and not before — the cell colony begins to turn into a genuinely individual animal.

When tissue from the jaw region of a chick embryo is wrapped in tissue from a mouse embryo from the region where teeth are formed and then incubated in the eye of an adult mouse, the chick develops teeth.

Hence, the curious persistence of those assertions in the Talmud that the embryo in the first forty days is «mere liquid,» and that the embryo does not form until forty days.

Couples often use PGD to screen for the most severe form of the disease, and any embryos that have it aren't implanted.

While your baby is in these early stages of development, your placenta and the amniotic sac (which provides the warm environment where the embryo will grow) are still forming as well.

Occasionally, there is an incomplete regression during embryo development, and extra breast tissue forms.

At this time there is no mechanism (since the placenta has yet to form) to protect the embryo from any deficiencies that the mother may possess.

Meanwhile, seven or eight days after a sperm fertilizes an egg in week 4 of pregnancy, a mass of cells — the earliest form of an embryo — implants into the wall of the uterus.

With identical twins, whether you have one or two placentas depends on when the fertilized egg splits — if the placenta has already formed when the embryo split in two, one placenta will sustain both twins — they'll each have an umbilical cord linking them to the shared placenta.

If the placenta formed before the embryo split into two, one placenta would be shared between the two embryos, but if the split occurred before the formation of the placenta, then two placentas will be formed.

Instead of preparing to form fingers and toes and a brain like the rest of the embryo's cells, these ones are destined to form a disc - shaped organ that's chock - full of blood vessels and will take over for the corpus luteum in the second trimester: the placenta.

The neural tube, which will form the brain and spinal cord starts to close from the center of the embryo outward.

The dust grains in the disk collide and aggregate to form pebbles, which grow into boulders, and so on increasing in size through planetesimals, planetary embryos, and finally rocky terrestrial planets.

The seed, which is an embryo with two points of growth (one of which forms the stems the other the roots) is enclosed in a seed coat with some food reserves.

Former Governor Martin O'Malley (D — MD) has supported stem - cell research involving human embryos (although he is a devout member of the Catholic Church, which has opposed many forms of embryonic stem cell research).

Eating the crustaceans as well as the wood might have given the dinosaurs an extra dose of nutrients during breeding season to help form eggs and nourish the embryos.

The feeding tube of the dying embryos was not forming properly, so researchers at first speculated that the gene controlled tube development.

The research team found that when it increased levels of E-NTPDase2 in tadpole embryos that consisted of only eight cells, they could cause parts of the eye to form not only on the heads of the amphibians, but also in tissues in other parts of their bodies, including their tails.

Over the past 15 years, the GFP gene has enabled scientists to watch a plethora of previously murky biological processes in action: how nerve cells develop in the brain, how insulin - producing beta cells form in the pancreas of an embryo, how proteins are transported within cells, and how cancer cells metastasize through the body.

To investigate whether maternally supplied gdf3 mRNA also plays a role in left - right patterning, the researchers used a series of experimental tricks to supply embryos with enough Gdf3 protein to form the mesoderm and endoderm and survive until the later stages of embryonic development.

The role of Oskar is to mark the posterior end of the cell so that the future embryo forms its tail in the right place.

CRH, in turn, triggered production of the cell surface protein FasL; trophoblasts expressing FasL then form a protective shield of sorts around the embryo by forcing any attacking immune cells to self - destruct.

By binding to a stem structure formed by uracil and adenine nucleotides in the nanos RNA, Glo prevents the production of Nanos protein at the front of the embryo, a step that enables the fly's head to form properly.

This process changed their shape, imitating what happens when real hearts form in developing embryos.

We do not know whether the two ICMs within the same embryo may have originated from uneven splitting of a single «parental» ICM or whether the two ICMs formed independently.

In effect, Takebe's team re-created the process by which a human embryo begins to form a functioning liver.