The blastocyst contains an embryoblast ( or inner cell mass ) that will eventually give rise to the definitive structures of the fetus, and the trophoblast, which goes on to form the extra-embryonic tissues.
42.
The layers would do all the laying, and biotech would come in at the factory level to zap all those billions of eggs with embryonic tissue from the best meat-growers that science could devise.
43.
Gov . Gray Davis signed legislation Sunday that expressly permits the research, which has been strongly opposed by anti-abortion groups and the Roman Catholic church because it involves the use of fetal and embryonic tissue.
44.
Human stem cells for the research will be obtained from eye donors through organizations such as the Lion's Eye Bank and the Children's Hospital of Orange County, Calif ., not from embryonic tissue, Young said.
45.
Dr . Paul Berg, a Stanford University biochemist and Nobel laureate, said he is constantly puzzled by outcries against the research because the cells to be used come from embryonic tissue that would otherwise be destroyed.
46.
The pituitary, by the way, is a complex gland whose two main parts, the anterior and posterior lobes, originate from different embryonic tissues but end up nestled side-by-side in a bony pocket deep within the skull.
47.
The pituitary, by the way, is a comple : gland whose two main parts, the anterior and posterior lobes, originate from different embryonic tissues but end up nestled side-by-side in a bony pocket deep within the skull.
48.
In the development of the differences between males and females in the embryo, male and female reproductive organs are homologous if they develop from the same embryonic tissue, as do the ovaries and testicles of mammals including humans.
49.
Recently, the MMP3 gene was shown to be down-regulated in individuals with cleft lip and palate when compared to controls, reinforcing the nature of cleft lip / palate as a condition resulting from insufficient or defective embryonic tissue remodeling.
50.
The world of politics and medicine collided when President George W . Bush was forced to rule on government funding for stem-cell research _ the use of human embryonic tissue for research on such ailments as Parkinson's disease and diabetes.
