There are four main subfields of biotech, which most implementations fit under: green, blue, white, and red.

Green biotech has to do with plants and growing, blue biotech has to do with aquatic uses of biological technology, white biotech is used in industry, and red biotech is used for medical purposes. While all four subfields have contributed a number of valuable processes, green biotech is probably the most widely used, while blue biotech is still relatively rare.

White biotech, which is also sometimes referred to as grey biotech, primarily focuses on using biological organisms to produce or manipulate things in a way that is beneficial for industry. Some bacteria can be used to treat metals or plastics, for example, in a way that may be more efficient or more cost-effective than more traditional methods. Others may be used to actively produce a chemical or compound to be used in the industrial process. One exciting use of white biotech is a way of cleaning a contaminated environment by releasing bacteria that help break down or degrade the unwanted chemical. Bacteria that consume oil from oil spills are one example of this.

Red biotech is used to create substances for medical use or to directly aid the body in fighting a disease or illness. The practice of genetically modifying yeasts and bacteria to produce drugs is one widespread use of red biotech, often allowing for the creation of drugs that would otherwise be impossible to manufacture. Manipulating a patient’s genome to cure a disease is another, relatively new use of red biotech.

Please let us know what is the colour of your specialism / career...

(source: www.wisegeek.com)