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Which Reaction Indicates That a Patient Has a Negative Skin

Question 28

Multiple Choice

Which reaction indicates that a patient has a negative skin test?


A) An area of erythema 20 mm in diameter
B) An area of induration and erythema 15 mm in diameter
C) An area of induration and erythema 10 mm in diameter
D) An area of induration and erythema 5 mm in diameter

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