the percentage of the rosette-forming cell ( auto-rfc ) was increased when pleural fluid lymphocytes of patients with tuberculous pleurisy and peripheral blood lymphocytes ( pbl ) from patients with tuberculosis or from tuberculin skin test positive healthy individuals were stimulated with ppd in vitro , whereas no increase of auto-rfc was observed in pbl from tuberculin skin test negative donors .
C0041296
tuberculosis
C0034131
ppd