Can the biopharmaceuticals produced from the proteins expressed in the milk of transgenic animals be produced any other way?
Yes. Most proteins can be produced using a range of different production systems, the most common being cell culture systems (often termed bioreactor systems). These are essentially cells, mammalian, bacterial or fungal, which have the gene coding for the protein of choice inserted into their DNA. The cells are grown in large stainless steel tanks man-made bioreactor vessels as opposed to animals which can be viewed as natural bioreactors.
