Sentences with phrase «days of embryonic development»

Nevertheless, this type of cell has a very short lifespan, limited to the first days of embryonic development, and they do not exist in any part of an adult organism.

Not exact matches

In the initial stages of the research project, Yaniv's team members Julian Nicenboim and Dr. Guy Malkinson obtained images of developing zebrafish embryos, whose transparent bodies make it possible to document embryonic development in real time over several days.

Again, the appearance of a protein in a certain part of the egg cell may affect embryonic development or the formation of organs days and weeks later.

Then, embryonic and / or placental development was evaluated on days three, six, 10, 12 and 16 of pregnancy.

Because the RNAi wasn't used to dampen FOXP2 activity until 23 days after the birds hatched, the new study shows that the gene has a role beyond embryonic development, says neurogeneticist Simon Fisher of the University of Oxford in the U.K. «The gene, at least in songbirds, may have important active functions in [neural] circuits,» he says.

The aorta - gonad - mesonephros (AGM) region in the aortic wall appears to be the most important source of new blood cells, and it has been found to contain numerous hematopoietic stem cells by day 11 of mouse embryonic development.

«The current extension of induced pluripotency to human cells is a major development and although it is early days for this technique it may well prove to be every bit as signifcant as the first derivation of human embryonic stem cells nine years ago.

5/15/2008 New Role Found for a Cardiac Progenitor Population In a discovery that could one day lead to an understanding of how to regenerate damaged heart tissue, researchers at the University of California, San Diego have found that parent cells involved in embryonic development of the epicardium — the cell l...

Mouse brain tissue from three different stages of the mouse brain development; embryonic day 15, postnatal day 2 and postnatal day 21, was studied.

Embryonic stem cells are obtained from early embryos (between 5.5 and 7.5 days of development post-fertilization).

In view of the different timing of meiotic initiation in female and male mammals, we determined the developmental expression profile of mouse Boule during both male and female embryonic gonadal development (embryonic day 10.5, E12.5, E16.5 and E17.5) in comparison with adult gonads.

In a similar manner, the induction of hematopoietic (cluster 20, day 3.5 +4 = E7.5) and cardiovascular - specific (cluster 12, 3.5 +5 = E8.5) genes follows the chronological order of the appearance of blood islands and the formation of the heart tube during embryonic development [50], [51].

Taking into account that ES cells are isolated at embryonic day 3.5 post fertilization, the sequential appearance of genes specific for gastrulation, mesoderm formation, hemopoiesis, cardiopoiesis and neurogenesis during ES cell differentiation follows the timing of comparable developmental stages in embryonic development.

It shows a mouse at embryonic day 10.5 and the expression of the Fezf2 gene in the developing cortical vesicles (in blue) at the start of brain development.