White blood

White Blood is an artificial blood developed for military use.

Haemoglobin, which is found in red blood cells and absorbs and releases oxygen, is normally red. However, the artificial red blood cells developed through nanotechnology that perform the same function as haemoglobin are instead white in colour. This literally gives the blood a pale colour (and therefore its user a pale complexion), hence the substance's name.

Raiden, having received cybernetic implants by the Patriots, used this kind of blood. After he was very badly injured when battling Gekkos during Solid Sun, he may have died had Naomi and Sunny been unable to find an infusion of White Blood and begin dialysis in time.