Fig. 4: H&E staining of the stented rabbit trachea.

A LZ61-KBMS stent stented trachea at various magnifications after (i–ii) 4 weeks, (iii–iv) 8 weeks; (v–vi) 12 weeks, B 316L ss stent stented trachea at various magnifications after (i–ii) 4 weeks, (iii–iv) 8 weeks; (v–vi) 12 weeks, C (i–ii) healthy rabbit trachea at two different magnifications.