Chemokine (C-X-C motif) receptor 5 (CXCR5) belongs to the CXC chemokine receptor family. CXCR5 plays crucial roles in B-cells migration into B-cell follicles of spleen and Peyer patches. CXCR5 reduces maintenance of immature neural cell populations and enhances proliferation of subgranular zone cells in the hippocampal dentate gyrus. GenScript’s human CCR1-expressing stable subline is guaranteed to function properly in the calcium flux assay.