Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Coreceptor utilization by pedigreed PI and TCLA 168 viruses. U87-CD4 cell lines expressing CXCR4 (▪) or CCR5 (░⃞) were used to define the ability of 168P and 168C viruses to utilize the respective coreceptor. CCR5 utilization was further tested by the addition to U87-CD4-CCR5 cells of CCR5-specific chemokines (RANTES, MIP-1α, and MIP-1β; R&D Systems) (□). For details, see text. ∗, no foci were observed.
