Antibody-Forming Cells in the Pronephros of the Teleost Lepomis Macrochirus

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Abstract
Summary: Using a modification of the hemolytic plaque technique cells producing hemolytic antibody in L. macrochirus (bluegill) have been recovered from two organs, the spleen and the pronephros. The pronephros contained larger numbers of antibody-releasing cells, a finding which correlated with its more prominent lympho-reticular morphology. Marked similarities between the pronephric cellular architecture and that of mammalian lymph nodes suggest a common involvement in filtration of tissue fluids as well as in antibody formation. As such, the teleost pronephros may represent a primitive prototype of the more advanced mammalian lymph node.

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