Nucleotide sequences derived from genes encoding for pectatelyases and their uses in particular for the detection of bacteria of the genus erwinia.

摘要

Method for preparing platelet factors and device for activation of thrombocytes of human or animal origin. This method for obtaining a solution of platelet factors comprises a step of thrombocyte activation by bringing the thrombocytes in contact with a thrombocyte activating solution, and a solution of platelet factors released by the thrombocytes during the activation stage is collected. The method is characterized in that a liquid containing a suspension of thrombocytes is passed over a filter capable of retaining the thrombocytes, in that an activating solution is added to the thrombocytes retained on the filter, and in that a filtrate containing the platelet factors in solution is separated by filtration, while the thrombocytes remain retained on the filter.