Talk:Kagune/@comment-139.193.67.173-20160603135247/@comment-10733658-20160603140326

There's a fan theory about human RC cells also having a type, yes. Obviously, this is only speculation since Ishida hasn't addressed the issue. But it would make sense that human RC cells, just like ghoul RC cells, would be divided into types based on their cellular characteristics. They simply lack the kakuhou, the organ needed to convert RC cells into anything useful such as a kagune or regenerative abilities.

If memory serves, RC types are defined based not only on where the kakuhou is but the characteristics of the cells themselves which result in different kinds of kagune. Ukaku cells go through the fastest process of formation and destruction, while Koukaku go through it the slowest and have a harder cell structure. Rinkaku cells stick together quickly, but tend to have a brittle structure because the fusion of cells is done in such a rushed fashion.

So the human cells could have those same traits, but no way to manifest them. It would be like blood type, or the like.