Stem cells differ from other kinds of cells in the body. Explain the three general properties in stem cells. Explain why scientists believe this is a promising area of study
What will be an ideal response?
Stem cells are capable of dividing and renewing themselves for long periods, they are unspecialized, and they can give rise to specialized cell types. Research on stem cells is advancing knowledge about how an organism develops from a single cell and how healthy cells replace damaged cells in an adult organism. This promising area of science is also leading scientists to investigate the possibility of cell-based therapies to treat disease, which is often referred to as regenerative or reparative medicine.
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Mature, unstimulated B cells leave the bone marrow and take up residence in the spleen, tonsils,
mucosal-associated lymphoid tissue, and lymph nodes. Indicate whether the statement is true or false
Factor(s) that make us think that an HIV vaccine may be of clinical benefit is(are)
a. the titer of antibodies against HIV is positively correlated with length of time of the latent stage b. the titer of the antibodies was inversely related to the length of the latent stage c. babies have an immature immune system and a shorter latent time d. A and C e. B and C
A messy and financially destructive divorce is most likely to trigger neustress
Indicate whether the statement is true or false
Which of the following is an acute response to exercise?
a. A decrease in resting heart rate b. An increase in heart rate during exercise c. A change in body composition d. An increase in the strength of a muscle