On the cell biology of pit cells, the liver-specific NK cells

Figure 5 Comparison of cytolysis between rat blood N K, HD and LD pit cells. The ratio of freshly isolated effector cells to target cells was 20:1.The cytolysis was measured in a 4 h ⁵¹Cr-rele ase assay for YAC-1and P815 cells and a 16 h ⁵¹Cr-release assay for CC531s cells. The data show that LD pit cells are more cytotoxic against YA C-1, P815 and CC531s than HD cells and blood NK cells. Values were means ± SD of three to five independent experiments. (Hepatology,1990; 12: 70-75, with permission)