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A dark colored staining produced by the active presence or residues of bacteria, microflora, algae, fungi, lichen, insects, or animals. In some cases, the biological residues can be detected by the UV fluorescence. Additionally, many types of plant residues contain Oxalic acid.
Synonyms and Related Terms
organische Verschmutzung (Deut.); pigmentação orgânica (Port.)
Resources and Citations
- Mary-Lou Florian, Fungal Facts: solving fungal problems in heritage collections, Archetype, London, 2002