At least two diseases are named after prosectors:   Contracting infections caused by contaminated cadavers is a constant danger among prosectors, particularly if a skin puncture accident results from the sharp surgical instruments used in this kind of work (about 70% of pathology workers report having at least one percutaneous incident). In this case, thin surgical gloves are not enough to protect. There are many cases of pathologists who died of acute sepsis (blood poisoning) because of this. Another example, a famous historical case, is that of Ernst von Fleischl-Marxow, an Austrian physician, pathologist and physiologist, who infected his finger during an autopsy and became dependent on morphine, due to the pain; and, later, on cocaine, at the instigation of his friend, Sigmund Freud. Presently, AIDS presents a problem. Although it is difficult to contract it by a single puncture incident (the overall personal risk has been estimated to be 0.11%), at least one case has been reported among pathologists. The continuous respiratory exposure to formaldehyde, used to preserve cadavers, is also an occupational risk of prosectors as well as medical students, anatomists and pathologists. Inhaled formaldehyde can irritate the eyes and mucous membranes, resulting in watery eyes, headache, a burning sensation in the throat, and difficulty breathing. Formaldehyde is listed as a potential human carcinogen.