Effect of Histoplasmosis on Antibody Response to an Erythrocyte Antigen1

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RESUMO

Infection of mice with Histoplasma capsulatum depressed their ability to form agglutinins against foreign erythrocytes. Animals previously inoculated with 108 yeast cells of H. capsulatum showed the most significant depression, occurring when erythrocytes were injected 8 days after infection. The average log2 hemagglutinin titer was 2.7 compared to 8.0 for the control (noninfected) group. In general, depression of hemagglutinin response in all infected mice was greatest 8 days after infection, but response was back to near normal after 16 days and stayed at that level for the remaining time tested (24 days).

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