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FIG. 1. Ornamental high relief frieze of Milan Cathedral chosen as the application site for the cleaning procedures. The arrows indicate the following sampling areas: arrow 1, sample 1; arrow 2, sample 2; and arrow 3, sample 3.
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| J. Bacteriol. | Microbiol. Mol. Biol. Rev. | Eukaryot. Cell | All ASM Journals |
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