The ___ act as intracellular signals to begin the immune response.
a) proteins
b) t cells
c) cytokines
Answer: c. cytokines
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Which of the following function as opsonins?
A) antibodies B) antigens C) complement fragments D) both a and c
The appropriate storage for a cerebral spinal fluid specimen is ____°C
a. 4 b. 22 c. 37 d. –70
Which of the following describes a prion?
a. enveloped viral particle with double-stranded DNA enclosed by a capsid b. infectious RNA particle c. infectious proteinaceous particle with no associated nucleic acids d. a simple prokaryote with only a membrane and a nucleoid region
Blood and tissue fluids of healthy people
a. contain different normal flora than found on the skin. b. contain the same normal flora as found on the skin. c. contain twice as many bacteria and yeast as found on the skin. d. contain only protozoa as part of the normal flora. e. are generally sterile and contain no microorganisms