食物原料“墨水”必须是便于从注射器中挤压出来的液体，可以是液体奶酪、巧克力和蛋糕面糊。
The inks are currently limited to "anything that can be extruded from a syringe" - such as liquid cheese, chocolate and cake batter.
Poietis并不是唯一一家做生物打印的公司，但是大部分其他公司使用挤压技术，涉及到通过一个喷嘴来挤压生物墨水，而不是用激光建立组织。
Poietis sis not the only company working on bio-printing, but most others use extrusion - which involves pushing a bio-ink through a nozzle - rather than lasers to build their tissue.
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