Those originally employed were based either on the fusion of the PCE to a tumour specific antibody (Antibody-Directed Prodrug Therapy, ADEPT) or on the delivery of the gene encoding the PCE using viral or non-viral vectors (Gene-Directed Enzyme Prodrug Therapy, GDEPT).
Urea is widely used in fertilizers as a source of nitrogen and is an important raw material for the chemical industry. Friedrich WÃ¶hler's discovery in 1828 that urea can be produced from inorganic starting materials was an important conceptual milestone in chemistry.
Starchy vegetables are healthy, but they are higher in carbohydrate than other vegetables and they have more calories. Therefore, these vegetables are grouped with other starchy foods instead of vegetables. One serving of any starchy vegetable is about 1/2 cup cooked vegetable.Starchy vegetables include: 1  Corn.tarchy vegetables are healthy, but they are higher in carbohydrate than other vegetables and they have more calories. Therefore, these vegetables are grouped with other starchy foods instead of vegetables. One serving of any starchy vegetable is about 1/2 cup cooked vegetable. Starchy vegetables include: 1  Corn.