Health What Are Secondary Antibodies and How Do They Work? Posted on May 6, 2026 By Michael Wilson In most immunological detection systems, secondary antibodies play an equally important role as the primary antibodies they are designed to detect. Secondary antibodies are raised against the immunoglobulins of another species — for example, a goat anti-rabbit IgG is raised in goat against rabbit immunoglobulin G — and are typically… Read more