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Histology results for GAG distinction. Sample constructs were sectioned in longitudinal direction and stained with Alcian blue at pH 1 (A) and pH 2.5 (B), safranin O (C) and toluidine blue (D). The sections are from constructs containing 100 micrometer-wide channels with 100 micrometers spacing. Red stars indicate scaffold layer. Scale bar: 50 micrometers
