Fig. 3From: Biosolubility of high temperature insulation wools in simulated lung fluidsSEM images of AES1: (a) untreated fibers; (b) calcium phosphate precipitates on fiber surface layers at pH 7.4 after 28 days of treatment; (c) fiber imprint formed by calcium phosphate precipitates at pH 7.4 after 28 days of treatmentBack to article page