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Antibodies (anti-HD) to hepatitis delta virus (HDV) were tested by radioimmunoassay in 207 human serum samples from the eastern Amazon (states of Pará and Amapá) and São Paulo, Brazil. 42 Amazon(More)
The search for leptospiral antigens (L. interrogans serogroup icterohaemorrhagiae) was carried out in 24 guinea pigs experimentally inoculated with 1 ml of culture containing 10(7)-10(8) leprospires(More)