Multiple Choice
Until recently, acquired immunity was thought to only occur in jawed vertebrates. Which of the following observations suggest that this is NOT the case?
A) Phenoloxidase activity enables hemocytes to form an impermeable wall of melanin around an infecting pathogen.
B) Invertebrate immune cells secrete an IL-1 like compound.
C) Invertebrates produce lectins, which coat bacterial cells, priming them for phagocytosis.
D) Copepods become resistant to tapeworms after an initial exposure.
E) None of these.
Correct Answer:
Verified
Correct Answer:
Verified
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