Abstract

We utilized ‘NaCl-preciptation method’ to remove serum blocking factors by use of modification of plasmapheresis system. The plasma was separated from formed elements by a diacetale cellulose membrane, and 2.5l of plasma was collected with 800 grams of NaCl in a plastic bag. The precipitation, which contains the blocking factors, was formed in the plastic bag, and the bag was stored in 4°C for three nights. The precipitation was removed by a filter membrane, and then saturated NaCl was removed by H. D. In the 1st treatment, 5% Albumin solution was used as replacement fluid, and from 2nd treatment, globulin reduced own plasma was used as replacement fluid. We treated three cancer patients and eight runs have been done to cancer patients over four weeks with no significant side effect. The tumor decreared in two patients, and at the sametime there were inprovements in the general conditions.