We offer a number of Invitrogen Molecular Probes labeling kits for the direct attachment of intensely fluorescent Invitrogen Alexa Fluor dyes, Invitrogen Qdot labels, R-phycoerythrin (R-PE), or even biotin to less than 10 μg up to 1 mg of IgG antibody.
Directly labeled antibodies allow you to use more than one same-species antibody in a single staining experiment. You can use traditional labeling chemistries optimized for your application or site-specific labeling using click-chemistry technology.