The 1.35-kb and 7.5-kb Duffy mRNA isoforms are differently regulated in various regions of brain, differ by the length of their 5' untranslated sequence, but encode the same polypeptide.

To the Editor : The Duffy antigen receptor for chemokines (DARC) is a seven-transmembrane domain glycoprotein of 35-45 kD that functions as receptor for the malaria parasites Plasmodium vivax and Plasmodium knowlesi and binds with high-affinity selected members of both the C-X-C and C-C classes of

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