White blood cells are transformed into useful microrobots.

Medical microrobots may be able to both prevent and treat illnesses in humans. However, the majority of these devices are constructed from synthetic materials, which instigate immunological responses in living things. Neutrophils in living fish have been precisely controlled by lasers to function as a biocompatible, organic microrobot. The "neutrobots" demonstrated how medications could be administered to various body areas in the future.