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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: J Immunol. 2014 Feb 21;192(7):3419–3427. doi: 10.4049/jimmunol.1300232

Table 1. Ligand binding properties of CCR4 expressing cells in heterologous competition binding assays.

Mean IC50 values are from at least three experiments.

Hot Tracer ligand
125I-CCL17 125I-CCL22
Cold
Competitor
IC50 CCL17
(nM)
IC50 CCL22
(nM)
IC50 CCL17
(nM)
IC50 CCL22
(nM)
CEM-4 2.5 ± 0.8 2.1 ± 0.8 3.8 ± 0.8 3.5 ± 0.7
L1.2 CCR4 3.1 ± 0.8 3.2 ± 0.8 4.1 ± 0.7 1.5 ± 0.8