Figure 8.

A schematic diagram illustrating the interaction of surface molecules on and production of interleukins by the immune cells in response to LDR and HDR LDR=low dose radiation; HDR=high dose radiation; APC=antigen presenting cells; TLC=T lymphocytesUpward and downward red arrows on the right side of the symbols separately stand for up-regulation and down-regulation and the blue arrows between the symbols indicate facilitation or stimulation of the process.