What is the role of memory cells?
provide immune protection specifically for central nervous system
remain in the lymphoid tissue to rapidly proliferate and differentiate upon subsequent exposure to the same pathogen
suppress the cellular response once the infection has passed
circulate in the body at elevated levels to maintain an active attack against any possible pathogen
prevent an immune response against members of the normal microbiota
remain in the lymphoid tissue to rapidly proliferate and differentiate upon subsequent exposure to the same pathogen
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Which of the following medications increases the force of cardiac muscle contractions?
A) diuretics B) antiarrhythmics C) beta-blocker drugs D) cardiotonic
The prefix dys- means:
a. between b. two c. below d. abnormal
Virtual sexual encounters on the Internet are known as ________.
Fill in the blank(s) with the appropriate word(s).
The cardiovascular system does not include which of the following?
A. systemic circulation B. coronary circulation C. pulmonary circulation D. lymphatic circulation