Biorobotics is a term that loosely covers the fields of cybernetics, bionics and even genetic engineering as a collective study. Biorobotics is often used to refer to a real subfield of robotics: studying how to make robots that emulate or simulate living biological organisms mechanically or even chemically. In fiction, biorobotics makes many appearances, like the biots of the novel Rendezvous with Rama, the replicants of the film Blade Runner, or the bioroids of Appleseed/Ghost in the Shell universe.