Very nice advance. The key part for any recreation of organs is to produce the structural parts that cells can attach to. In practice, these structures have been too fragile to survive until they had gained enough rigidity.
But here, they surround the printed material with a semi-solid that can be melted away at body temperature once the structural element has hardened.
And it can be done for less than $500.
Entering an amazing world.
Image: Luke Jones