This is bizarre:
This picture of a patient who had alkaptonuria (Fig. 1) was taken by my father, Dr. Ian Maxwell, in 1957 and was developed using the patient’s own urine [emphasis added].
Alkaptonuria was the first described “inborn error of metabolism.” This rare (< 1 per 250 000 births) hereditary recessive disorder is characterized by a triad of excretion of homogentisic acid in the urine, ochronosis (dark pigmentation of the connective tissues) and early-onset arthritis…
Continue reading and see urine-developed photo in the Canadian Medical Association Journal