Gene expression is the generation of a functional gene product from the information encoded by a gene, through the processes of transcription and translation. Gene products are often proteins ...

Expression systems are genetic constructs (a gene encoded by DNA) that are designed to produce a protein, or an RNA (ribonucleic acid), either inside or outside a cell. Expression systems are used ...

Skimmed milk has a little more calcium than semi-skimmed, which in turn has a little more calcium than whole milk. The reason is simply that as the fat is removed, the watery proportion of the ...