| 20110230571 | DIAGNOSTIC AND THERAPEUTIC PROTOCOLS - The present invention relates to methods for determining co-receptor usage of an HIV in a subject including the steps of: culturing a viral preparation derived from the subject's plasma with one or more cell lines which express surface CD4 and CCR5, surface CD4 and CXCR4, or surface CD4, CCR5 and CXCR4, wherein an anticoagulant is added to the viral preparation or to the culture; and screening for infection, wherein the presence or absence of infected cells is indicative of the co-receptors used by the HIV. | 09-22-2011 |