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The continuous migration of immune cells between lymphoid and nonlymphoid organs is a key feature of the immune system, facilitating the distribution of effector cells within nearly all compartments of the body. Furthermore, reaching their correct position within primary, secondary, or tertiary lymphoid organs is a prerequisite to ensure immune cells' unimpaired differentiation, maturation, and selection, as well as their activation or functional silencing. The superfamilies of chemokines and chemokine receptors are of major importance in guiding immune cells to and within lymphoid and nonlymphoid tissues. In this review we focus on the role of the chemokine system in the migration dynamics of immune cells within lymphoid organs at the steady state and on how these dynamics are affected by infectious and inflammatory processes.
Schulz et al. (Tue,) studied this question.