<p><a href="https://3dprinting.stackexchange.com/questions/973/which-properties-of-real-organs-do-3d-printed-organs-have">A recent question</a> regarding bio-printing has been put on hold and I'd like to discuss the validity of the question here in the 3D Printing community.</p>
<p>I personally feel that the question fits within the scope of the community as it specifically requests details on the process of 3D printing.</p>
<p><strong>Valid Questions:</strong></p>
<blockquote>
<p>Also can someone explain how human cells can be printed?</p>
<p>Would this involve some kind of cell-plastic filament?</p>
</blockquote>
<p><strong>Borderline Question:</strong></p>
<blockquote>
<p>How would the cells survive, etc. Where would you get these cells from and how would you be able to go from using a 3D printer to layer these cells together to then forming an organ out of that?</p>
</blockquote>
<p>I don't see how this can be much different than:</p>
<blockquote>
<p>Also can someone explain how <em>{stainless steel}</em> can be printed?</p>
<p>Would this involve some kind of <em>{granular steel}</em>?</p>
</blockquote>
<p>For the borderline question:</p>
<blockquote>
<p>How would the <em>{stainless steel bond}</em>, etc. [How] would you get these {granules of stainless steel} from and how would you be able to go from using a 3D printer to layer these <em>{granules}</em> together to then forming <em>{a solid part}</em>?</p>
</blockquote>

[{'answer_id': 124, 'author': 'Ryan Carlyle', 'author_id': 298, 'author_profile': 'https://3dprinting.meta.stackexchange.com/users/298', 'pm_score': 2, 'selected': False, 'text': "<p>It seems like a great subject to incorporate, since bioprinting is 1) pretty neat and 2) an important application for 3D printing in general... but I sort of suspect none of our active users have the necessary expertise at the moment. It's a highly specialized field. We don't want the question to sit for an extended period with (at best) 1-2 mediocre answers, do we? That seems to be what happens to this sort of question at the site's current activity level. </p>\n"}, {'answer_id': 125, 'author': 'Tormod Haugene', 'author_id': 115, 'author_profile': 'https://3dprinting.meta.stackexchange.com/users/115', 'pm_score': 2, 'selected': False, 'text': '<p>I think 3D bio printing - just like any kind of 3d printing - certainly should fall within the scope of this site. One could argue that such questions are hard to answer, and most likely outside the knowledge of most users, but I still think <em>good</em> bio questions should be encouraged. </p>\n\n<p>As for the linked question specifically, I think it is way too broad, asking not one, but perhaps five completely fine questions at the same time. Individually, I believe those questions would be answerable to the right person.</p>\n'}]
['https://3dprinting.meta.stackexchange.com/questions/123', 'https://3dprinting.meta.stackexchange.com', 'https://3dprinting.meta.stackexchange.com/users/98/']