Figure 3.

Projection of a cell scheme (n={3,t} to a n={2,t} plane, and that of the n ={2,t} plane to a n={1,t} line. Only a three dimensional space offers stable internal and external "open", i.e., constantly porous boundaries.

Kayser et al. Diagnostic Pathology 2011 6:68   doi:10.1186/1746-1596-6-68
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