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. 2004 Oct 13;102(3):249–262. doi: 10.1016/j.vetimm.2004.09.017

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Fig. 1 — Photomicroscopy of H&E stained porcine alveolar macrophages (PAM) exposing to sheep red blood cells (sRBC) pre-treated with murine anti-sRBC serum (A) and untreated sRBC (B). Panel A shows rosette formation indicating the compatibility between porcine Fc receptor and murine immunoglobulin. Observed under light microscope at 200× magnification.