<prompt> Duffy antigen is associated with:Cluster of Differentiation 123 CD123Cluster of Differentiation 234 CD234Cluster of Differentiation 345 CD345Cluster of Differentiation 456 CD456  <response>: Duffy antigenchemokine receptor DARC, also known as Fy glycoprotein FY Associated with CD234 Cluster of Differentiation 234 Duffy antigen is located on the surface of RBCs. Glycosylated membrane protein and a non-specific receptor for several chemokines. Receptor for the human malarial parasites Plasmodium vivax and Plasmodium knowlesi. Polymorphisms in this gene are the basis of the Duffy blood group system. 