From 1931 to 1947, some 80% of graduates from New York City high schools had been extracurricularly active, as in sports or clubs. Participation was highest, 99%, at Bay Ridge High School, a girls' school in Brooklyn, and was lowest, 56%, at Theodore Roosevelt High School.
A: The term stem cells includes many different kinds of cells. What they have in common is that they have the ability to make other types of cells. No other cell in the body can do that. Some stem cells can renew themselves and become virtually any cell in the body. Those are called pluripotent stem cells. They include embryonic stem cells.
Precursor cells are stem cells that have developed to the stage where they are committed to forming a particular kind of new blood cell. Read More In blood: Blood cells Precursor cells are stem cells that have developed to the stage where they are committed to forming a particular type of new blood cell. By dividing and differentiating, precursor cells give rise to the four major blood cell lineages: red cells, phagocytic cells, megakaryocytes, andâ¦ Read More reticuloendothelial system