| 摘要 |
In order to produce, in a procaryote cell, a plasminogen activator by expressing a c-DNA coding for this activator, which c-DNA is incorporated in a vector that is suitable for the host cell, a strictly controlled vector is used so that its replication cannot be dissociated, or can only be temporarily dissociated from the replication of the chromosome of the host cell. Its culture is carried out in conditions such that no laxity occurs in its control. Plasmids that are particularly suitable for carrying out this process are disclosed. |
