To orient properly tiny biopsies, the tissue may be put on paper or absorbable gelatin sponge (Gelfoam) for formaldehyde fixation. With Zenker's fixation, the tissue may be attached with egg albumin to a piece of cucumber.
Goldman L, Franzen M. Orientation of Small Biopsies. Arch Dermatol. 1971;103(4):407–408. doi:10.1001/archderm.1971.04000160057009
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