Scientists are exploring other options for the production of therapeutic proteins. Some of these include:

Animal Pharming
Animal pharming describes the process of using transgenic animals to produce proteins that are used in pharmaceutical production. This process involves the splicing and insertion of a foreign gene into the chromosome of a particular animal.  The protein encoded by the transgenic is secreted into the animal’s milk, eggs or blood, and extracted, refined, and used as the active pharmaceutical ingredient (API) in a pharmaceutical application.