Rieger M, Trnka L, Skvor J
Scand J Respir Dis. 1979 Dec;60(6):355-7.
Study of the relationship existing between in vivo and in vitro correlates of cell immunity has revealed that there is no marked correlation between the magnitude of skin induration of the tuberculin skin test and the degree of inhibition of migration of blood leukocytes stimulated by PPD in patients with newly detected, bacteriologically confirmed pulmonary tuberculosis.