Delayed skin reactions to cytoplasmic extracts of Nocardia organisms as a means of diagnosis and epidemiological study of Nocardia infection
Ortiz-Ortiz, L.; Bojalil, L.F.
Clinical and Experimental Immunology 12(2): 225-229
1972
ISSN/ISBN: 0009-9104 PMID: 4567647 Document Number: 54199
When purified cytoplasmic extracts of N. asteroides and N. brasiliensis were utilised as skin test antigens in individuals infected with N., a delayed hypersensitivity reaction was observed. Cross reactivity occurred between the N. antigens, but the inflammatory reaction was usually larger with extracts obtained from the infecting micro-organism. In addition, the extract from N. brasiliensis appeared useful in epidemiological studies, since skin reactivity was shown by individuals working or living in areas in which N. brasiliensis was isolated from soil.