R5 virus uses CCR5 for viral entry and is considered macrophage-tropic. R5 is the predominant HIV type.
X4 virus uses CXCR4 for viral entry and is considered T lymphotropic.→ Patients with X4 virus cannot be treated with HIV medications that target CCR5 (☆eg, maraviroc) because the X4 virus uses CXCR4, not CCR5, to enter cells.
microbiology
UWorld
Optimized studying based on the forgetting curve vastly improves memorization. - What is reminDO?
Memorize
