Antibody Structure (image) Rockefeller University Share Print E-Mail Caption Known as the Fc domain, the stem of Y-shaped antibodies (above) can activate immune cells via their Fc receptors. The two arms, meanwhile, target foreign proteins. A new study has found Fc receptors are key to the generation of immunological memory of cancer following antibody treatment. Credit Laboratory of Molecular Genetics and Immunology/Rockefeller University Usage Restrictions This image may only be used to illustrate research described in the accompanying release. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.