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SEM micrographs of the (A) transverse cross-section, (C) longitudinal cross-section, (D) inner and (E) outer surface of the porous chitosan stent, and inner surface of the 8 Fr stent (F). Confocal micrograph of (B) a transverse cross-section of the porous chitosan stent. The dust particles in (F) was created for imaging purpose. The scale bar on (D) is shared with (E).
