Aliquots of CVLs from various study visits in Segments A and B (see Fig 2 for exact time points) were assayed by Luminex (Bio-Plex MAGPIX, Bio-Rad Laboratories, Hercules, California, USA) for cytokines that have been associated with HIV transmission [33 (link)–38 (link)], utilizing a custom Invitrogen ProcartaPlex multiplex kit (ThermoFisher, Waltham, Massachusetts, USA) per manufacturer’s protocol. The analytes included: TNF-1α, IL-6, IL-1α, IL-1β, IL-1RA, MIP-1α, MIP-1β, RANTES, SDF-1α, IL-8, MCP-1, IP-10, GM-CSF, IFN-γ, IL-10, and IL-12p40.
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