Dick test
The Dick test is based on the principle that the body can produce specific antibodies (anti-erythema toxin) after streptococcal infection. Once the antibodies are produced, they have immunity. At this time, if the rash is injected subcutaneously, the rash will no longer be produced A test. Therefore, using the local response after subcutaneous injection of rash toxin, the subject's immunity to streptococcus can be understood.
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