title: Lyt phenotype, lymphocyte migration and the selective tissue positioning of mouse T cell sets.
abstract: Functionally defined mouse Lyt-1 and Lyt-2 cell sets were selected from peripheral lymph nodes by cytotoxic elimination with anti-Lyt monoclonal antibodies. The selected populations were labelled with 51Cr or [3H]-adenosine and traced in syngeneic recipients at 1, 24, 45 and 65 hr after intravenous injection. Recovered radioactivity in recipient organs was measured by gamma-counting. The exact tissue positioning of the labelled cells was determined by autoradiography and labelled cell counting in spleen, lymph node and Peyer's patch microenvironments. Selected cell sets differed from unselected T cells in two ways: (i) Selected Lyt-1 and Lyt-2 cells showed some decline in recovery from recipient lymph nodes at 24 hr after injection; (ii) Lyt-2 cells showed enhanced localization to Peyer's patches. Autoradiographic analysis of microenvironmental tissue positioning of [3H]-adenosine labelled cells confirmed a relatively higher localization of Lyt-2 cells in Peyer's patches than in lymph nodes. In both tissues, the majority of the labelled cells were found in T areas. In the spleen, a higher proportion of Lyt-2 cells was seen in T-independent follicular areas.
mesh_terms: D000818:Animals; D001345:Autoradiography; D002465:Cell Movement; D007421:Intestine, Small / Q000166:cytology; D008099:Liver / Q000166:cytology; D008168:Lung / Q000166:cytology; D008198:Lymph Nodes / Q000166:cytology; D051379:Mice; D008810:Mice, Inbred C57BL; D013154:Spleen / Q000166:cytology; D013601:T-Lymphocytes / Q000502:physiology*; D013602:T-Lymphocytes, Cytotoxic / Q000502:physiology; D006377:T-Lymphocytes, Helper-Inducer / Q000502:physiology; D050378:T-Lymphocytes, Regulatory / Q000502:physiology