Files in this Data Supplement:

• Supplemental file 1 - Movie S1 (Rotation of reconstructed polysynapses in 3D.)
  QuickTime movie file, 8.6 MB.
• Supplemental file 2 - Movie S2 (Video analysis of Gag movements.)
  QuickTime movie file, 13.75 MB.
• Supplemental file 3 - Fig. S1 (Characteristics of virological polysynapses in HIV-1-infected primary CD4⁺ T cells.)
  Fig. S2 ( HIV-1 budding at the surface of a primary CD4⁺ lymphocyte.)
  Fig. S3 (Image of polysynapse visualized by TEM.
  MS PowerPoint file, 2.14 MB.
• Supplemental file 4 - Supplementary methods and legends to figures and movies
  Zipped MS Word document, 12K.