Experiments on 130 mice of different strains have revealed that washed mouse erythrocytes taken on day 7 of experimental staphylococcal infection induce the pronounced increase of humoral immune response to sheep red blood cells in syngeneic recipients, while mouse erythrocytes taken on day 14 of this infection induce immunosuppression. Erythrocytes acquire immunosuppressive properties at the period of red blood regeneration.
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