Preferably, the eukaryotic cells are observed following transfection for characteristic changes, such as cell density trends, the decrease in viability including cytopathic effects during the post-infection period and the color change of the medium due to pH-changes.
The term "obtaining" comprises the harvest, isolation, purification and/or formulation (e.g. finishing, inactivation and/or blending) of the antigen.
The term "harvest" refers to collecting or recovering the antigen of the mycoplasma bacteria from the transfected eukaryotic cell system. Any conventional method known in the art can be used to recover said mycoplasma antigen, e.g. any separation method. Well known methods in the art comprise centrifugation or filtration, such as using a semi-permeable membrane having a certain pore size.
The term "isolation" comprises an isolation step of the mycoplasma antigen. Methods for the isolation of antigens of the mycoplasma bacteria from the infected eukaryotic cell system are known to a person skilled in the art. Those methods comprise physical and/or chemical methods, including but are not limited to freeze thaw cycles, treatment with ultrasound and the alike.
Methods for the "purification" of antigens from the isolate are known to a person skilled in the art, for example by those methods described in Protein purification methods - a practical approach
Preferably, the eukaryotic cells are observed following transfection for characteristic changes, such as cell density trends, the decrease in viability including cytopathic effects during the post-infection period and the color change of the medium due to pH-changes.The term "obtaining" comprises the harvest, isolation, purification and/or formulation (e.g. finishing, inactivation and/or blending) of the antigen.The term "harvest" refers to collecting or recovering the antigen of the mycoplasma bacteria from the transfected eukaryotic cell system. Any conventional method known in the art can be used to recover said mycoplasma antigen, e.g. any separation method. Well known methods in the art comprise centrifugation or filtration, such as using a semi-permeable membrane having a certain pore size.The term "isolation" comprises an isolation step of the mycoplasma antigen. Methods for the isolation of antigens of the mycoplasma bacteria from the infected eukaryotic cell system are known to a person skilled in the art. Those methods comprise physical and/or chemical methods, including but are not limited to freeze thaw cycles, treatment with ultrasound and the alike.Methods for the "purification" of antigens from the isolate are known to a person skilled in the art, for example by those methods described in Protein purification methods - a practical approach
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