To draw a sample of venous blood from a patient, it is necessary to perform the medical procedure of a/an ________, which is also known as a venipuncture
Fill in the blank(s) with correct word
phlebotomy
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When does an ex-smoker’s risk for cancer approach that of a lifetime nonsmoker?
a. 10 years b. 15 years c. 20 years d. 25 years
Memory T cells, effector T cells, and naïve T cells share several characteristics. Which of the following descriptions could only be said of memory T cells?
A. Memory T cells are activated by any APC. B. Memory T cells are only found in one location and do not circulate. C. Memory T cells express CD44, CD62L, and CCR7. D. Memory T cells recognize MHC class I or class II peptides displaying antigen molecules. E. Memory T cells depend upon co-stimulatory signals from CD2/ LFA-3, CD45R/ CD22, and LFA-1/ ICAM-2.
Use a scientific calculator to find the value of each expression.
What will be an ideal response?
Loss of muscle mass as one grows older is primarily due to
A. disuse. B. aging. C. obesity. D. malnutrition. E. overexertion.