 in EAU mice housed under mesopic or photopic light on day 00 after immunization. Naive CD0^+^ T cells (CD0^+^CD00^low^), activated CD0^+^ T cells (CD0^+^CD00^high^), CD00b^+^ (CD00b^high^CD00c^low^ macrophages and neutrophils) and CD00c^+^ (CD00c^high^MHC-II^high^ dendritic cells). Data are expressed as means + s.e.m. (*N* = 0 each). 