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Immunoelectron microscopy of M. bovis BCG (A, B, C, D) and E. faecium (E, F, G) labeled with NCR-Fc. Bacteria labeled with NKp44-Fc (A, E), NKp30-Fc (B, F), NKp46-Fc (C, G), and a goat anti-human IgG antibody conjugated with 10-nm colloidal-gold particles. (D) Negative control. Bars = 0.5 μm.
