John Hughes Bennett (1812-1875)

John Hughes Bennett PRCPE FRSE was an English physician, physiologist and pathologist. He was the first todescribe leukemia as a blood disorder (1845), and also the first to describe aspergillosis.
In his seminal paper published in 1842 entitled “On the parasitic vegetable structures found growing in living animals”, Bennett gave the earliest description of pulmonary aspergillosis. Bennett was one of the first to recognise the importance of the microscope in the clinical investigation of disease and his use of the instrument was central to identifying the presence of a fungus in the sputum and, post mortem, lungs of the patient with aspergillosis.

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Read an obituary from the British Medical Journal of 1875