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Q. What are blood stem cells?
Stem cells are undifferentiated cells able to differentiate into other kinds of specialized cells.
The stem cells of the bone marrow originate the differentiated blood cells According to stimulus from specific growth factors the stem cells are turned into red blood cells, megakaryocytes and leukocytes (cells that form platelets). Research shows that stem cells of the bone marrow can also differentiate into muscle, hepatic cells and nervous.
How might stem cells and other tools of "regenerative medicine" be used to treat brain diseases? Fuelled by the hope which stem cells may have the capacity to rebuild virtually
The cranial nerves are composed of twelve pairs of nerves which emanate from the nervous tissue of brain. In order to reach their targets they should ultimately exit/enter the cr
Explain in brief about the term - Calcium Calcium is absorbed as Ca 2+ ion and is a constituent of cell wall, an activator of different plant enzymes and is essential for t
A. In order to determine the atomic number of an element we need to know the number of protons in an atom. As we know that atom is neutral we can also take the number of electro
In the last unit we traced the human evolutionary history mostly from a palaeontological viewpoint. Although still fragmentary, the available fossil evidence makes it possible to c
Define the Nutritional shortcomings among the elderly? Nutritional shortcomings are common among the elderly; most often due to poor choice of foods i.e. they may be consuming
Importance of fat synthesis and storage : As is clear from above account, all surplus nutrients, digested and absorbed from above the immediate need of body, are readily
State the ways in which (a) all plant cells, (b) some plant cells vary from animal cells. (a) All plant cells have a cellulose cell wall. (b) Some plant c
Increase in population size is known as population growth. It depends upon number of persons added to the population and number of persons lost from the population. Addition in pop
Define Evolution of food processing? 8000 - 7000 BC. Mankind first began farming, growing crops and raising animals for food instead of hunting and gathering for food.
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