A generalized graph of the relationship between HIV copies (viral load) and CD4 counts over the average course of untreated HIV infection; any particular individual's disease course may vary considerably. Line beginning high is CD4+ T cell count (cells per µL). Line beginning low is HIV RNA copies per mL of plasma.

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A generalized graph of the relationship between HIV copies (viral load) and CD4 counts over the average course of untreated HIV infection; any particular individual's disease course may vary considerably. Line beginning high is CD4+ T cell count (cells per µL). Line beginning low is HIV RNA copies per mL of plasma.