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What is the difference between 3D printed organs and human organs?

Update time : 2021-01-13

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What is the difference between 3D printed organs and human organs?
At present, the tissues and organs manufactured by 3D printing in the laboratory are still different from human organs in terms of size, structure, cell type, cell survival time, and so on. Therefore, most of the 3D printed tissues and organs are still None can be implanted into the body as a transplanted organ.
The 3D printed organs have been able to maintain a fixed shape and have simple organ functions.

However, human organs are often composed of a variety of different cells. Various types of cells or cell collections play different roles. Organs have a large number of blood vessels, nerves, and various types of pipelines together with cells to realize complex functions in the body.
However, 3D printed tissues or organs often have a single cell type and do not have a complex pipe network structure. They usually cannot realize the complex functions of human organs and can only be called "tissue-like" or "organ-like".
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As a tool for medical research, 3D printed organs are used in drug screening and tumor models.

For regenerative medicine, 3D printing uses cells from the recipient, the tissues and organs produced do not have immune rejection, and the size and function of the tissues and organs can be highly customized.

3D printed implantable organs have broad prospects in the near future and are very exciting.