[Outer form and internal disease: clinical photography in the late 19th century].

Clinical photography in the late 19th century aimed at unveiling the hidden processes invisible to the clinical eye. Changes in the outer form hinted at deeper lying causes, and decoding these forms was supposed to extend the range of the clinical eye in to the realm of invisibility. Two suppositions supported this hope: the belief that each disease as an ontological entity showed typical exterior signs which allowed a diagnosis at sight, and the technological trust in photography as a precise and objective means of representation superior to the human eye.

The different routes of calcium efflux from liver mitochondria.

Calcium efflux from liver mitochondria, induced by an uncoupler during incubation at 20 degrees C, is largely inhibited by the prior addition of ruthenium red or EGTA. The inhibition by EGTA (i.e.