Capillary tube leukocyte adherence inhibition: An assay for cell-mediated immunity in cancer patients

Abstract
The leukocyte adherence inhibition (LAI) assay has been modified and automated in order to facilitate its clinical application. This new assay‐the capillary tube LAI test‐correlated with delayed cutaneous hypersensitivity using streptokinase‐streptodornase antigen in 83% of the cases. When tested with a 3 m KCI lung carcinoma antigen, lung carcinoma patients' leukocytes were more frequently inhibited (55%) than those of controls (normals 6%, other tumors 20%).