Factor Xa is the activated form of the coagulation factor thrombokinase, known eponymously as Stuart-Prower factor.

This activated form inhibits viral DNA polymerase, thus impairing the ability of the virus to replicate within the cell.

In its activated form, the Guyver is humanoid-shaped, with the Control Metal on the forehead.

Calcitriol, the activated form of vitamin D, promotes intestinal absorption of calcium and the renal reabsorption of phosphate.

The remainder seem to be there as bystanders, sharing only the characteristic that they are in an activated form.

It is used in nucleotide sugars metabolism as an activated form of glucose as a substrate for enzymes called glucosyltransferases.

For vitamin D to perform its myriad biochemical roles in body cells, it must first be converted into an activated form, vitamin D hormone.

It is commonly synthesised by reacting diethylamine with an activated form of lysergic acid.

Researchers have now discovered that even by themselves, promoters can stimulate cells to produce activated forms of oxygen, known as 'free radicals'.

Another crucial factor in stemming adult bone loss is having enough vitamin D in its activated form.