Cryptosporidium parvum Infection in Mice: Inability of Lymphoid Cells or Culture Supernatants to Transfer Protection from Resistant Adults to Susceptible Infants

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Abstract
The ability of murine lymphoid cells or culture supernatant fractions to transfer protection against Cryptosporidium parvum was examined. Spleen or mesenteric lymph node (MLN) cells were taken from adult mice resistant to C. parvum and given either directly or following in vitro culture to infant mice. Neither spleen or MLN cells, nor cells or supernatant fractions from in vitro cultures transferred protection from resistant adult donors to susceptible infant recipients. These results may be due to limitations in the present model. Alternatively, the resistance of infant mice to C. parvum may not be immunologically mediated.

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