[Estimation of cell agglutination by laser nephelometry].

Laser nephelometry was used to measure the lectin-mediated agglutination of cultured human tumor cells (of osteosarcoma and adenocarcinoma of the lungs). The rates of a decrease in the value of light dispersion (V delta VLD) and the length of time (to) necessary for complete cell sedimentation (at V delta VLD-O) can be used as quantitative indices of cell agglutination. V delta VLD and to were found to correlate with the concentrations of tumor cells and lectins (PHA and Con A).