[The medical illustration as the expression of illusion and imagination--the liver as an exampel from history].

The paper deals with concepts concerning the structure and function of the liver. According to the Hippocratic Collections the liver had five lobes. This concept was adopted by Galen and also became the concept of the medival physicians and teachers of anatomy.

Nitric oxide as putative second messenger in nerve-induced cervical gland secretion in the guinea-pig.

Uterine cervical secretory cells receive a sympathetic cholinergic secretomotor innervation. It has been suggested that glandular nitric oxide (NO) production is a prerequisite for muscarinic-induced carbohydrate secretion in the endometrium and the seminal vesicle. A similar pattern for nerve-induced carbohydrate secretion in the cervix could be assumed.

Diffusion coefficient for photon transport in turbid media.

Light propagation in a turbid medium is considered using the linear transport equation. The existence of a diffusion length is proved for the Henyey-Greenstein scattering kernel for all absorption ratios. Numerical methods are given that allow accurate computation of the diffusion coefficient quite easily.