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(A) Buccal mucosa samples stained with Diff-Quick; membranes from left to right: Millipore Isopore 0.1 μm, Millipore-MF 0.45 μm, Millipore-MF 0.22 μm. (B) Buccal mucosa samples stained with hematoxylin and eosin; membranes from left to right: Millipore-Isopore 0.1 μm, Millipore-MF 0.45 μm, Millipore-MF 0.22 μm.
