claim: Barcelona is the capitol city of New Jersey.
evidence: C-C chemokine receptor type 7 is a protein that in humans is encoded by the CCR7 gene .. protein. protein. gene. gene. Two ligands have been identified for this receptor  : the chemokines -LRB- C-C motif -RRB- ligand 19 -LRB- CCL19 / ELC -RRB- and -LRB- C-C motif -RRB- ligand 21 -LRB- CCL21 -RRB- .. CCL19. CCL19. CCL21. CCL21. CCR7 has also recently been designated CD197 -LRB- cluster of differentiation 197 -RRB- .. cluster of differentiation. cluster of differentiation