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. 2011 Dec 15;25(2):400–424. doi: 10.1093/shm/hkr162

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© The Author 2011. Published by Oxford University Press on behalf of the Society for the Social History of Medicine. All rights reserved

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Fig. 5 — Olitsky and Gates' Bacterium pneumosintes. Two stained cultures from a rabbit's lung into which were infected nasal secretions from a case of ‘epidemic influenza’. On the left, the culture was magnified ×1000. On the right, it was magnified ×3000. Infectivity was tested by inoculation into the lungs of rabbit.

Source: Olitsky and Gates 1921a, p. 729.