**7. Molecular farming and metabolic engineering, an opportunity for producing plants with a high technology**

Molecular farming and metabolic engineering make the production of new high-tech products possible. There is a driving force backing molecular farming that makes its costs much less than traditional farming. *Chlamydomonas reinhardtii*, as a unicellular alga, is one of the most recent production projects examined by Franklin and Mayfield. *C. Reinhardtii* is the only plant whose transformation was operated in its all segments containing DNA (nucleus, plastid, and mitochondria). Unique features of the moss system bring about the possibility of removing target genes and purification of the proteins secreted from the culture medium. The target gene was omitted to get rid of the nuclear genes for glycosylation. The first step towards the longterm goals of reengineering mechanism in modifications of plant proteins is setting a new standard in all systems of plant expressions in order to humanize the biomedicines produced in plants [59].
