These studies are concerned with the removal of Phosphorus~2-labeled Staphylococcus aureus from milk-contact surfaces by ultrasonic cleaning procedures, and the growth of the residual organisms on these surfaces. The test organism was incorporated into the soil menstrua (a modified Ringer Solution and homogenized, pasteurized whole milk), dried down with the soils upon various milk-contact surfaces under highly reproducible conditions~ removed by ultrasonic irradiation treatments, and assayed by submersion in Staphylococcus (Agar) Medium No. 110, Bacto-Strip contact, plastic replica-embedding and staining, Geiger counting, and autoradiographic techniques.
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Masurovsky et al. (1960) studied this question.
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