Preserved, non-infectious control cells prepared by the...

C - Chemistry – Metallurgy – 12 – N

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C12N 5/00 (2006.01) A61K 35/18 (2006.01) G01N 1/42 (2006.01) G01N 15/12 (2006.01) G01N 33/483 (2006.01) G01N 33/50 (2006.01) G01N 33/554 (2006.01) G01N 33/569 (2006.01) G01N 33/96 (2006.01) G01N 1/28 (2006.01)

Patent

CA 2164131

The invention describes the preparation of preserved, non-infectious control cells. The control cells are prepared by modification, activation or otherwise changing selected normal leukocyte cells, tissue culture cells or zenogenic transplants in immunosuppressed animals to have characteristics of abnormal cells or by the addition of cells from an established cell line, which has been similarly modified or activated, to a normal leukocyte population. The preferred method of preserving the control cells is by lyophilization using an isotonic 10% trehalose solution.

L'invention concerne la préparation de cellules de contrôle non infectieuses et leur conservation. Les cellules de contrôle sont préparées par la modification, l'activation ou par d'autres changements de cellules normales leucocytaires sélectionnées, de cellules de culture ou de transplants xénogènes chez des animaux traités par des immunosuppresseurs, pour avoir les caractéristiques de cellules anormales ou encore par l'addition de cellules provenant de lignées cellulaires établies qui ont été modifiées ou activées de manière similaire, à une population de leucocytes normaux. Le procédé préféré pour conserver les cellules de contrôle consiste à les lyophiliser en utilisant une solution isotonique à 10 % de tréhalose.

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