Further, only the two-day-old embryos that have four equal-sized cells called blastomeres, and a nucleus that is clearly visualized, are the most likely to develop into a healthy pregnancy. ❋ Niels H. Lauersen (2000)
At this stage the cells are called blastomeres, and the organism as a whole is called a morula from the time it has 16 blastomeres to the next stage. ❋ Ashcraft (2010)
The fertility clinic where you work is on fire, and in one office, there is a Petri dish contains five human blastomeres (fertilized eggs) †according to “pro-life†dogma (see South Dakota) these are five “pre-born children. †❋ Unknown (2006)
In his paper, Lanza says that of 91 blastomeres used, 53 divided. ❋ Unknown (2007)
There is debate over whether the single-celled blastomeres, once removed from embryos, might be able to develop into embryos themselves, scientists say (though there have been no published reports supporting this to date). ❋ Unknown (2007)
Typical somatic cells in animals are 5-10 µm in diameter, but ova can be a millimeter or more in diameter, and individual blastomeres the cells in the cleavage stage embryo can be several hundred µm across. ❋ Unknown (2006)
In fertility clinics, where the embryo is available outside the woman in the normal course of in vitro fertilization, one of these blastomeres can be removed for diagnostic tests, like for Down syndrome. ❋ Unknown (2006)
The new technique would be performed on a two-day-old embryo, after the fertilized egg has divided into eight cells, known as blastomeres. ❋ Unknown (2006)
Munne reports that FISH screening of 3,594 blastomeres from 514 pre-implantation embryos pinpointed far more aneuploidies among women over forty than should have been expected, given the rates of aneuploidy tallied from amniocentesis tests of fetuses carried by older women and from live births. ❋ Unknown (1995)
In this way Roux was able after taking a frog's egg, pricking and destroying one of its two blastomeres, to obtain half an embryo from the other. ❋ Unknown (1965)
He followed this up in the next year [493] by showing that whole embryos could be produced from one or more blastomeres isolated at the four-cell stage. ❋ Unknown (N/A)
In 1888 appeared a famous paper by W. Roux, [489] in which he described how he had succeeded in killing by means of a hot needle one of the two first blastomeres of the frog's egg, and how a half-embryo had developed from the uninjured cell. ❋ Unknown (N/A)
A year or two later Herlitzka [500] found that if the first two blastomeres of the newt's egg were separated by constriction, two normal embryos of rather more than half normal size were formed. ❋ Unknown (N/A)
Considerable astonishment was therefore caused by Driesch's announcement in 1891 [493] that he had obtained complete larvæ from single blastomeres of the sea-urchin's egg isolated at the two-celled stage. ❋ Unknown (N/A)
In the same year T.H. Morgan [499] repeated Roux's fundamental experiment of destroying one of the two blastomeres, but inverted the egg immediately after the operation -- a whole embryo of half size resulted. ❋ Unknown (N/A)
Isolated observations had previously been made upon the development of single blastomeres or parts of blastulæ, by Haeckel and Chun for instance, [473] but Roux [474] and ❋ Unknown (N/A)
The main result of the first few years 'work on the development of isolated blastomeres was to show that the mosaic theory was not strictly true, and that the hypothesis of a qualitative division of the nucleus was on the whole negatived by the facts. ❋ Unknown (N/A)
