The Differential Sensitivity of Human and Rhesus Macaque CCR5 to Small-Molecule Inhibitors of Human Immunodeficiency Virus Type 1 Entry Is Explained by a Single Amino Acid Difference and Suggests a Mechanism of Action for These InhibitorsErika Billick, Shawn E. Kuhmann, John P. Moore et al.|Journal of Virology|2004Cited by 42