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SUMMARY.— The production of esterase and lipase by aerobic bacteria from normal human skin surfaces was tested by simple plate tests against natural and artificial substrates. Almost all of 42 strains of Micrococcaceae representative of each of Baird‐Parker's subgroups produced strong esterases and lipases, as did most of the 82 strains of Sarcina spp., especially those most commonly present on healthy skin. Forty per cent of 50 aerobic skin diphtheroids and 20% of 58 aerobic nasal diphtheroids produced active lipases.
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Richard Holt (2006) studied this question.
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