Calcium mobilization in Hos/CD4/CCR5 cells coexpressing FPRL1 or pcDNA3 vector (Mock).

(A) and (B) Ca⁺⁺ flux by Hos/CD4/CCR5/FPRL1 cells in response to RANTES and W peptide. (C) Sequential stimulation of Hos/CD4/CCR5/FPRL1 cells with RANTES (50 ng/mL) and W peptide (10 nM) or vice versa. (D) and (E) Ca⁺⁺ flux in Hos/CD4/CCR5/Mock cells induced by RANTES and W peptide. (F) Sequential stimulation of Hos/CD4/CCR5/Mock cells with W peptide (1 μM) and RANTES (50 ng/mL).