All of the following events occur within germinal centers except
a. centrocytes mature from centroblasts
b. isotype switching
c. centroblasts arise from activated B ells
d. B cells are activated by CD4 helper T cells
e. affinity maturation
f. somatic hypermutation
g. production of memory B cells.
D
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Answer the following statement(s) true (T) or false (F)
1. For most regular tobacco users, sudden abstinence from nicotine produces withdrawal symptoms. 2. In general, symptoms of withdrawal from tobacco begin 2 to 3 days after the last dose of nicotine. 3. Secondary stimuli are psychoactive substances that increase addiction to tobacco. 4. Possessing the DRD2 gene decreases the chances of nicotine addiction. 5. The average age at which tobacco users begin to smoke is 18.
Why did Roman males train physically during the time of the Republic?
What will be an ideal response?
Identify the combining form cervic/o with its closest definition: ________.
Fill in the blank(s) with the appropriate word(s).
Choose the correct root/combining form and its meaning in the term narcolepsy.
A. lep; tic B. narco; sleep C. lepsy; seizure D. narc; pain E. narco; stupor