to concentrate the cells and separate them from cell-free substrate after termination of phagocytosis , 30-60 % of each flask 's contents were centrifuged ( 400 x g , 20 min ) atop a metrizamide subphase ( 34 % wt/vol , rho = 1.18 ) .
C0007634
cells
C0031308
phagocytosis