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A comparison of PPD-S and RT 23 was carried out in three pairs of population groups. Tuberculin sensitivity was thought to have resulted, in one of each pair, almost entirely from infection with Mycobacterium tuberculosis, and in the other, from the diverse causes operating in the United States of America. Among persons with specific tuberculin sensitivity, 2.5 TU of RT 23 in a saline buffer containing Tween 80 were approximately equivalent to 5 TU of PPD-S in phosphate-buffered saline diluent. Among persons whose sensitivity appeared to have resulted from infections with organisms antigenically similar to the Battery strain of unclassified mycobacteria, 2.5 TU of RT 23 in Tween 80 gave considerably more reactions than 5 TU of PPD-S.
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
October 1971,
Gruzlica i choroby pluc; tuberculosis et pneumonologia,
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
March 1973,
Gruzlica i choroby pluc; tuberculosis et pneumonologia,
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
January 1967,
Medecine tropicale : revue du Corps de sante colonial,
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
July 1978,
Journal of biological standardization,
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
April 1954,
American review of tuberculosis,
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
January 1969,
Acta microbiologica Polonica. Series B: Microbiologia applicata,
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
July 1969,
Gruzlica i choroby pluc; tuberculosis et pneumonologia,
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
March 1960,
American journal of hygiene,
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
July 1969,
Gruzlica i choroby pluc; tuberculosis et pneumonologia,
G W COMSTOCK, and
L B EDWARDS, and
R N PHILIP, and
W A WINN
January 1969,
Acta microbiologica Polonica. Series B: Microbiologia applicata,
