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Fig. S3
Cells with high intracellular and granular PNA staining express MHC2. Confocal images of gill (A), skin (B) and thymus (C) cryosections from mhc2dab:GFP adult fish, following PNA (red) and DAPI (blue) staining. Single optical section (A) or maximal intensity projections from 9 (B) or 5 (C) optical sections taken every micrometer. pL (primary Lamellae), sL (secondary Lamellae), Bc (Branchial cavity), Ext (External environment), E (Epidermis), Lrp (Lympho-reticular parenchyma). Scale bar: 10 µm (B, C), 20 µm (A).
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