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  • risk
  • For persons who are otherwise at low risk and are tested at the start of employment, a reaction of ≥15 mm induration is considered positive. (drugs.com)
  • cells
  • However, many normal structures from the ears of the nine-banded armadillos, such as condrocytes, condroblasts, fibroblasts and endothelial cells, and Gram positive bacteria cocci, showed false positive reaction by the BCG marker. (unifesp.br)
  • 7) Subsequent restimulation of these sensitized lymphocytes with the same or a similar antigen, such as the intradermal injection of TUBERSOL, evokes a local reaction mediated by these cells. (nih.gov)