Since the antigens are closely linked to race and ethnicity, it is much easier to find a biological match among people with similar ethnic and racial backgrounds than it is among any two randomly selected individuals. On the basis of tissue matching, organs from blacks will almost always go to blacks and organs from whites will almost always go to whites. Blacks, however, have a much higher incidence of

Provided with the right mixture of signals, embryonic stem cells can develop into mature cells that can function as neurons, muscles, bone, blood along with other needed types of cells. Stem cells that have this flexibility are portrayed as pluripotent, in order to indicate their high potential to differentiate into a wide variety of cell types. A second attribute of embryonic stem cells is that they have the ability

On the other hand however, it gives rise to an exclusive attitude and a multiple layer style of development and economic evolution because there will always be countries that fail to keep up with innovative technology, high tech research and revolutionary concepts which stand at the basis of today's creative industries. This is why the population in least developed countries does not consider globalization as being benefic for the

Ethics of Human Cloning In 1971, Nobel Prize winning-scientist James Watson wrote an article warning about the growing possibility of a "clonal man." Because of both the moral and social dangers cloning posed to humankind, Watson called for a worldwide ban on any research leading to cloning technology (Watson 8). Until then, cloning had been largely relegated to the realm of science fiction. Scientific research concerning cloning and in vitro fertilization

Stress and CAD Before discussing the link between stress and heart disease, we must operationalize stress. The reason for this is that when one does a literature search in PubMed using the search terms "stress and heart disease" one will get nearly 40,000 references. Stress contributing to cardiovascular disease has been defined as vital exhaustion, oxidative stress, psychiatric disorders, or multiple other physical stressors that impact cardiovascular functioning. This paper will

) Researcher believe that when Alzheimer's begins to attack, it hits the "factory" of cell groups that otherwise are functioning perfectly. There are breakdowns in the communications that the cell groups hitherto provided, and although scientists don't know precisely where the attack is first launched by Alzheimer's, but they do understand that "as the damage spreads, cells lose their ability to do their jobs and, eventually die, causing irreversible changes