With the introduction of bioprinting the possibility of new organs is becoming a reality. The ability to replicate and print cells in complex structures could mean different cells with various functions could be put together in new ways to create new organs we would take millions of years to evolve naturally. Frankenstein-esque hybrid organs could then be put together using cells from different body parts or even different species.
The first is a defibrillating organ using parts from an electric eel that can discharge to release an electric current to the heart when it recognizes it going into fibrillation (heart attack).
The second is an organ that uses rattlesnake muscles to release mucus from the respiratory system of a person who suffers from cystic fibrosis and dispel it through the stomach.
The third contains cells from the saliva gland of a leech and releases an anticoagulant when it feels the pressure of a potential blood clot in the brain as a way of avoiding a stroke.