Abstract: | The test of macrophage disappearance from peritoneal exudate quite effectively shows the state of cell-mediated immunity in guinea pigs immunized with both live and killed S. typhimurium culture. The macrophages of the animals immunized with killed S. typhimurium culture react to the protein extract of these bacteria more actively than the macrophages of the animals immunized with killed S. sonnei cultures, which indicates the specificity of this test. |