An invading substance that stimulates the immune system is called a(n) :
A) toxicity.
B) pathogen.
C) antigen.
D) None of these is correct.
Correct Answer:
Verified
Q29: Pathogens include all of the following, EXCEPT:
A)
Q30: The incubation period is equivalent to which
Q31: Latency period is a term used in
Q32: The science and study of the causes
Q33: Diseases may be classified into general categories.
Q35: John Salk suggested that herd immunity required
Q36: Consider the following two populations

Q37: Consider the following two populations

Q38: Consider the following two populations

Q39: Consider the following two populations

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