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June 1920


Arch Derm Syphilol. 1920;1(6):638-641. doi:10.1001/archderm.1920.02350060019003

In studying experimental syphilis in the rabbit, it has been noted on some occasions that testicular fluid obtained by puncture showed in the darkfield numbers of extremely tenuous, filamentous forms. These flexible bodies in some degree simulated Spirochaeta pallida in motility and spiral structure, and yet were clearly not the specific organism. The problem was not so much that of explaining any possible relationship that these forms might bear to the spirochete as to throw light on their origin. The easiest interpretation — only too readily invoked in the field of bacteriology, unfortunately — would have been that of ascribing to these forms a stage in the so-called life cycle of Spirochaeta pallida. It is not the purpose of this brief paper to enter into a discussion of the work that has been published recently in this connection by British and American writers. It is merely in the spirit of

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