Frequency of polymorphisms of genes coding for HIV-1 co-receptors CCR5 and CCR2 in a Brazilian population
Entry of human immunodeficiency type 1 virus (HIV-1) into target cells requires both CD4and one of the chemokine receptors.Viruses predominantly use one, or occasionally both, of the major co-receptors CCR5 and CXCR4, although other receptors, including CCR2B and CCR3, function as minor co-receptors.A 32-nucleotide deletion (delta32) within the bet