Respond to this post from a classmate: Stemming from advancements in 3D printing technology, bioprinting is the process of 3D printing using 'bioink' made of living cells, biomolecules, or biological materials. Biological 3D structures can be printed using one of the main methods: extrusion, droplet, or laser-based bioprinting (Dey & Ozbolat, 2020). Extrusion-based methods rely on mechanical systems that deposit bioinks in as a continuous filament, similar to how polymer filament is used in traditional 3D printers. Droplet-based bioprinting requires thermal or electric simulation to produce bioink droplets that are then compounded on each other in layers to create the biomodel. As the name suggests, laser-based techniques utilize lasers to build a three-dimensional structure, with the light of the laser 'cures' the cells in place via photopolymerization. Laser-based printers offer more precision compared to the others, and each variation has specific bioink requirements, like viscosity, in order to effectively print biological models (Dey & Ozbolat, 2020)