As time are going by medical science is coming out with new miracles and news. People are getting more astonishes by the discoveries of medical science as it has come out with unexpected results in human cloning and in mammalian expressions. Defining a mammalian expression then we can say that producing a functional mammalian protein often necessitates using a mammalian expression host to ensure appropriate posttranslational modifications such as disulfide bonds, glycosylation, and phosphorylation. Biopharmaceuticals companies or organization are going par the time to make something new which would serve the humans in terms of any cloning and DNA related issues.

In biopharmaceutical companies produced medicines with the usage of mammalianexpressions to produced efficient medicines which are used to cure deadlydiseases. They use the efficient healing from herbal sources and more than four hundred biotechnology products are available in the market throughout the world. These medicines are free from any poisons or toxins and are considered safe for humans.Through inherited or genomic engineering all these Biopharmaceutical organizations are using animals to produce pharmacologically active proteins like blood product substitutes, mammalian expressions, hormones, cytokines, vaccines and other therapeutic agents. Practical Biopharmaceutical companies' produces proper choice of gene expression system and host plant and takes choice whether to use a food crop or non-food crop is more suitable.

In earlier times of civilization people used all the natural process like the plants or the extracts from plants are used as treatments for many diseases. The industries are using genetic engineering to produce different types of proteins like blood substitutes, mammalian antibodies, vaccines and other therapeutic units. Newly, the production of external proteins used by genetic engineering has become practical substitute to conventional production systems like mammalian cell culture or microbial fermentation. These mammalian expressions are used for removing any genetical problems and used as an important element in mammalian engineering.

The plant based organisms are mostly in demand as they are free of human diseases and mammalian viral problems and diseases. Thus, plant organisms are possible for the production of large scale and efficient recombinant proteins are used to get rid of the toxic agents which are polluting the environment. But as far as genetic engineering is concerned scientists are focusing more on mammalian expression to get better results and to cure human genetic problems through the mammals only. Taking for example monkeys genes and cells are under regular scans of the major research and development companies to take out results of such genetical problems and make the matter easier.