[Activity of rabbit heart on thromboxane synthetase]. / Etude de l'activité du Myocarde de lapin sur la thromboxane synthétase.

ABSTRACT

The soluble and microsomal fractions of Rabbit myocardium are not able to induce the synthesis of thromboxanes. On the contrary, they inhibit the thromboxane synthetase of various sources. The chemical structure of the active constituent responsible for this activity is not yet known it is probably neither of an enzymatic nature, nor a protein of high molecular weight.