Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; compact discs, DVDs and other digital recording media; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment, computers; computer software; fire-extinguishing apparatus; Laboratory, scientific, or computer hardware apparatus and peripherals in this class for the aforesaid for engineering 3D bio-printed biological tissues, tissue arrays, and cells namely, apparatus and peripherals for the design, engineering, and maintenance of the engineered, 3D bio-printed biological tissues, tissue arrays, and cells