For monoclonal antibody production, mammalian expression systems are preferred over bacterial expression systems, primarily because:

Select an option to attempt

1. A
   mammalian cultures have better productivity
2. B
   mammalian cultures produce extra-cellular product simplifying the purification steps
3. C
   mammalian system provide necessary post-translational modifications
4. D
   mammalian genes can only be expressed in mammalian systems