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B- and T-lymphocyte distribution in lung tissue during acute and chronic antigen exposure. Lungs from naïve and challenged mice were stained with anti-CD45R/B220 [red (full colour versions of figures are available online)] for B cells and anti-CD3 (green) for T cells. Additional high magnification fields are shown in Supplementary data, Figure S6. Mice were sacrificed at the time points indicated during the course of antigen exposure. Representative lung sections are shown.
