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Immunocytochemical detection of CEACAM1 in placental hybridoma cells (clone AC1M88). A: Untransfected. B: CEACAM1-transfected, staining for CEACAM1. C: Mock-transfected. D: Untransfected. E: CEACAM1-transfected, staining for CEACAM1 (arrow). F: Mock-transfected. Original magnifications: ×10 (A–C); ×20 (D–F).
