Kodak Plus-X safety film tin, containing original negatives showing insertion of a rabbit ear chamber by Dr. RG Williams, University of Pennsylvania, and insertion of bone autografts with such a chamber, photographed by PAG Monro, January 1956

Peter Alexander George Monro (1919-2005) was an anatomist, lecturer, and Fellow of St John's College, University of Cambridge. He invented and devised innovative methods of visualising blood flow in vivo (living) animals and found ways of measuring the velocity of red blood cells. Any experimental work including animals was and remains tightly controlled by the UK government's Home Office.

He founded the British Microcirculation Society in 1963 and served as its Secretary for 20 years before becoming President.