Stichting Vrienden Van De Stichting Dr. Karl Landsteiner

Giulia C Ricotti

Willem P Zeijlemaker

The invention relates to a method for increasing the hybridization of cells in vitro and for increasing the production and secretion of substances, formed by such cell hybrids by adding endothelial cells and/or the supernatant of endothelial cells to a hybrid culture. In particular the invention is concerned with a method for increasing the production of monoclonal antibodies in vitro by means of a hybridoma technique by adding endothelial cells and/or the supernatant of endothelial cells to a hybridoma culture. Usually human endothelial cells and/or the supernatant of human endothelial cells are used. Finally the invention relates to endothelial cells and/or the supernatant of endothelial cells for use for increasing the hybridization of cells in vitro and for increasing the production and secretion of substances, formed by such cell hybrids, and for increasing the production of monoclonal antibodies in vitro.

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Hoofddorp, Netherlands

Giulia C Ricotti