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Time–course of BCG infection in three strains of intranasally inoculated mice (BALB/cJCit, C57BL/6 J, C3H/HeN). Means (n = 10) of CFU counts in the lungs (open squares) and spleens (open circles) at different times after inoculation with 106 CFU BCG-Pasteur strain organisms. Standard errors < ±0·16. Limit of detection 0·7 log CFU/organ.
