English to French Other Science (general)

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The method is particularly useful for the removal of enveloped viruses as well as non-enveloped viruses such as Murine Leukemia virus (enveloped) which may be removed by filters with a pore size around 50 nm, and Porcine Parvovirus (non-enveloped) which may be removed by filters with a pore size around 20 nm.
The liquid Factor VII compositions, e.g. those comprising a significant ratio of activated Factor VII polypeptides, can in principle be prepared from the dry Factor VII constituents, but are more typically obtained from large-scale production processes, e.g. processes involving recombinant techniques.

In such processes a cell culture supernatant is typically harvested and subsequently subjected to one or more processing steps to obtain the desired protein, including, without limitation, centrifugation or filtration to remove cells that were not immobilized in the carriers;

affinity chromatography, hydrophobic interaction chromatography; ion-exchange chromatography; size exclusion chromatography; electrophoretic procedures (e.g., preparative isoelectric focusing (IEF), differential solubility (e.g., ammonium sulfate precipitation), or extraction and the like.