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Diffusion of a lymph-carried antigen in the fiber network of the lymph node of the rat

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Summary

A lymph-carried antigen is retained preferentially in those areas of the subcapsular sinus of a lymph node overlying the extrafollicular zone of the peripheral cortex. There, it becomes associated with the reticular fibers crossing these particular sinus areas. We wondered whether the antigen thereafter diffuses along the extensions of these fibers which form a peculiar network in the “cortical pathways of migration of circulating lymphocytes” (CPMCL), leading to the different cell populations effecting the immune responses. Fluorescein isothiocyanate (FITC)-conjugated antigens were injected locally into rats sacrificed 0.5–24 h later. The antigens diffused along the fibers of the CPMCL. It is proposed that this diffusion constitutes one mechanism of stimulation of recruited circulating lymphocytes and of orientation of their migration towards the proper effector-cell population.

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Authors and Affiliations

  1. Département d'Anatomie, Université de Montréal, Montréal, Québec, Canada

    G. Sainte-Marie & F. -S. Peng

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  1. G. Sainte-Marie
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  2. F. -S. Peng
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This work was supported by the Medical Research Council of Canada

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Sainte-Marie, G., Peng, F.S. Diffusion of a lymph-carried antigen in the fiber network of the lymph node of the rat. Cell Tissue Res. 245, 481–486 (1986). https://doi.org/10.1007/BF00218547

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  • DOI: https://doi.org/10.1007/BF00218547

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