In this issue of Science Immunology, Gallman et al. reveal how S-geranylgeranyl-l-glutathione cleavage and transport support P2RY8-driven B cell confinement to the germinal centers and its role in lymphocyte homing to the bone marrow.
Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.