Sentences with phrase «occur as the embryo»

Implantation bleeding can occur as the embryo attaches to the uterine lining; this bleeding is characterized by minor vaginal bleeding which may be accompanied by abdominal cramping.

Not exact matches

Most of these chromosome problems occur by chance as the embryo divides and grows — not because of problems inherited from the parents.

Human multiple births can occur either naturally (the woman ovulates multiple eggs or the fertilized egg splits into two) or as the result of infertility treatments such as IVF (several embryos are often transferred to compensate for lower quality) or fertility drugs (which can cause multiple eggs to mature in one ovulatory cycle).

We do not know why in the very early stages of pregnancy still occur spotting, although speculation on this subject exist and they concern the process of implantation of the embryo in the uterus, as well as the action of hormones.

The abnormalities occur by chance as the embryo develops and have nothing to do with anything you did or did not do during or before your pregnancy.

They found methylation defects on several human genes in the cord blood and placentas of ART embryos, suggesting that a similar effect might be occurring in humans as well.

As part of these ongoing research activities, the DNA of Dravet patients without SCN1A mutations was analyzed by trio exome sequencing, which searches across the active parts of the genome for de novo mutations that have arisen in these patients (de novo mutations are DNA copying errors that occur in the parents» gametes or in the fertilized egg or embryo, resulting in the afflicted family member being the first person in their family to have this genetic condition).

In aging, this gene expression presumably occurs to compensate for the accumulation of protein damages; during diapause, the same genes may be activated to prepare the whole embryo to catch up with the interrupted development and be ready to hatch as the rainy season starts.

Researchers suspect the health risks could arise from the treatments themselves, perhaps from drugs used to trigger ovulation or from changes that occur as a result of freezing and thawing embryos.

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.

The finding, reported by researchers at Harvard T.H. Chan School of Public Health, Northeastern University, and MIT, provides insights into organ formation in an embryo, healing of a wound, and even invasion of cells into surrounding tissue, as occurs in cancer.

Differentiation occurs as a few fertilized cells develop into an embryo acquire the specialized organs that will be needed later in life.

With the first spontaneous movements taking place as early as 17 hours post-fertilization and swimming behavior occuring after 27 hours, zebrafish embryos prove to be a good model for the study of development of locomotor activity.

The result was the discovery of three new mammalian genes - known as sonic, Indian, and desert hedgehog - and the realization that the proteins they coded accounted for a significant proportion of all developmental interactions known to occur in the vertebrate embryo.

Differentiation occurs as a few fertilized cells develop into an embryo, then acquire the specialized organs that will be needed later in life.

Understanding the conditions that cause these cells to go off to different fates may have a bearing on health problems such as ectopic pregnancy, which occurs when the embryo develops outside of the womb in about 1 of 60 pregnancies, or molar pregnancy, which is abnormal tissue growth within the uterus that affects about 1 in every 1,000 pregnancies.

Scientists discovered that when this occurs, a DNA repair process employed within human embryos activates to fix the broken gene, using the normal copy of the gene as a template.

And as I have just did my egg retrieval yesterday, I wanted to cleanse myself from all the toxins that may occur during my stimulations injections & whatnots, as part of my preparation for the coming embryo transfer.