First published in 1988: This comprehensive set is crucial to the basic understanding of the immune system and is an essential component of the design and implementation of improved immunization strategies. Contains authoritative reviews of cell migration research and addresses the is-sues of lymphocyte recirculation leading to inductive interactions, and the subsequent migration and homing of effector cells generated from these responses. Systemic migration of cells from the central and peripheral lymphoid organs, the dichotomy of behavior between systemic and mucosal lymphoid cell pools, and explanations sought for mechanisms mediating selectivity of migration and homing are covered. This set is of interest to problem oriented scientists.