Karelitz and Stempien discovered that extracts from human serum globulin and placental globulin can be used as lightening agents for scarlet fever and this was used later as the basis for the Dick test.
2.
In October, 1923, Dick and her husband successfully isolated hemolytic streptococcus " as the causative agent of scarlet fever, " and later developed the "'Dick test "', a skin test which determined a person's susceptibility to the disease and ultimately won a lawsuit against the Lederle Laboratories in 1930 for " patent infringement and improper toxin manufacture ."
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