This protocol images both the immunological synapse formation and the subsequent polarized secretory traffic towards the immunological synapse. Cellular conjugates were formed between a superantigen-pulsed Raji cell (acting as an antigen-presenting cell) and a Jurkat clone (acting as an effector helper T lymphocyte).
Bello-Gamboa, A., Izquierdo, J. M., Velasco, M., Moreno, S., Garrido, A., Meyers, L., Palomino, J. C., Calvo, V., Izquierdo, M. Imaging the Human Immunological Synapse. J. Vis. Exp. (154), e60312, doi:10.3791/60312 (2019).