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Localization of IL-5 transcripts to the lung epithelium of NJ.1726 mice. An IL-5 antisense RNA probe was synthesized from an IL-5 cDNA (a kind gift of T. Honjo) cloned into the plasmid vector pBluescript KS(+). No signal was detected when a sense probe was hybridized to adjacent sections (data not shown). TB, terminal bronchiole; AD, alveolar duct; AS, alveolar space; BALT, bronchus-associated lymphoid tissue. Bar, 25 μm.
