Anti-Mouse IgG1 (Fcγ Fragment specific), AlpSdAbs® VHH (iFluor594) is designed for detecting mouse IgG1 Fcγ fragment specifically, and Anti-Mouse IgG1 (Fcγ Fragment specific), AlpSdAbs® VHH (iFluor594) is useful for super-resolution microscopy. Anti-Mouse IgG1 (Fcγ Fragment specific), AlpSdAbs® VHH (iFluor594) is based on recombinant single domain antibody to mouse IgG1 Fc coupled to iFluor594. Based on immunoelectrophoresis and/or ELISA, Anti-Mouse IgG1 (Fcγ Fragment specific), AlpSdAbs® VHH (iFluor594) reacts with the Fc fragment of mouse IgG1 selectively, no reactivity with other mouse IgG subclasses, mouse IgM, or the Fab portion of mouse immunoglobulins.