Abstract
Usefulness of a simple microagglutination test for diagnosis of malignant diseases was evaluated in the diagnosis of lung cancer. The test was not specific, being positive in 82% of malignant and 55% of nonmalignant cases. It was shown that poly-L-lysine-induced agglutination of lymphocytes reflects rather changed serum than cell properties and cannot be taken as a method for detection of sensitized cells.