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Credit
Ueber Pigment in einem Sacrococcygealteratom : Inaugural-Dissertation zur Erlangung der Doctorwürde vorgelegt der hohen medicinischen Facultät der Universität Zürich / von Otto Spöndly. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.