The mushroom's resistance to heavy metal toxicity is conferred by a biochemical called a phytochelatinan oligopeptide whose production is induced after exposure to metal.
Later biographers characterise him as a perfectionist, excessively conscientious and scrupulous, to the point where considerations of detail prevented him from completing much.
Protein production systems (in lab jargon also referred to as expression systems) are very widely used in the life sciences, biotechnology and medicine.
The micro-organisms are immobilized into the thin biological film, as the vapor passes over the film they become attached and are oxidized or stabilized.
