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Surgical and transfer isolators. Source: R. D. Barnes, D. V. I. Fairweather, J. Holliday, C. Keane, A. Piesowicz, J. F. Soothill, and M. Tuffrey, "A Germfree Infant," Lancet 293 (January 25, 1969): 168-71, 169.
© Elsevier Limited. Reprinted with permission.
