phytohaemagglutinin ( pha ) -stimulated lymphocytes from healthy individuals and a malignant cell-line ( k-562 cells ) were cultured in a growth medium of 75 per cent rpmi 1640 ( gibco ) supplemented with 25 per cent of uraemic serum or plasma obtained after systemic heparinization .
C0229671
serum
C0032105
plasma