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Caption : fig. s1 xps spectra (a) c 1s and (b) o 1s of qcd-p.

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Caption : fig. s2 fluorescence spectra of qcd-p under ultraviolet irradiation within 30 minutes.

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Caption : fig. s3 the od600 of (a) mrsa, (b) p. aeruginosa, (c) b. subtilis, (d) e. coli and (e) s. cerevisiae solution treated with different concentrations of qcd-p at different times within 48 h.

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Caption : fig. s4 agarose gel electrophoresis analysis of the dna of s. aureus with or without treatment of qcds. lanes 1-4: (1) genomic dna of s. aureus incubated with qcds (0.1 mg ml-1); (2) genomic dna of pristine s. aureus (diluted); (3) genomic dna of pristine s. aureus (undiluted); (4) dna marker.

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Caption : fig. s5 time curves of casein hydrolysis by qcd-p and papain.