Visualizing context-dependent calcium signaling in encephalitogenic T cells in vivo by two-photon microscopy. gan Kyratsous, N, Bauer, I, Zhang, G, Pesic, M, Bartholomäus, I, Mues, M, Fang, P, Wörner, M, Everts, S, Ellwart, J, Watt, J, Potter, B, Hohlfeld, R, Wekerle, H, Kawakami, N