[Proteinases and their inhibitors in intervertebral discs].

The authors investigated the incidence of proteinases and their inhibitors in bovine intervertebral discs. They proved the presence of proteinases of all basic enzyme classes. In some instances (in the class of cysteine proteinases) a more detailed specification of the present enzymes could be made.

Isolation and some properties of an acid protease from Fasciola hepatica.

A new protease, detected in an extract of Fasciola hepatica, was isolated and partly purified. The pH optimum for the cleavage of denaturated haemoglobin by the enzyme is pH 3.0.