The secondary antibodies of the anti-subtype have no cross-contamination with other subtypes of the species, such as anti-mouse IgG2a, anti-mouse IgG2b, anti-mouse IgG1, anti-mouse IgG3, anti-mouse IgA, and anti-mouse IgM. However, it has not been done whether there is any intersection with subtypes of other species. Our secondary antibodies are specific within the same species range, eliminating cross-contamination issues. If you need secondary antibodies to eliminate cross-reactions between different species, you can contact us for personalized customization.