From Big Medical Encyclopedia

REAGINS (Latin re-the prefix meaning repetition, resuming + to work with agere; synonym: antibodies are atopic, antibodies skin sensibilizing) — the allergic antibodies capable to be fixed on nek-ry cells (e.g., corpulent, basphilic, etc.) and to take part in development of an atopy and an anaphylaxis; hl belong. obr. to a class of immunoglobulins E, see. Antibodies, allergic .