Figure 7.
Mouse CD1d1–αGalCer tetramers stain human Vα24/Vβ11 NKT cells. Human PBLs were stimulated with 0.1 μM αGalCer in vitro and stained after 7 d in culture. In this experiment, CD1d1-mediated αGalCer presentation to NKT cells is provided by the PBLs themselves. After centrifugation through Ficoll, the cells were preincubated with anti-TCR antibodies for 1 h before adding tetramer-PE. Note that anti-Vα24 completely blocks tetramer binding.