All proteins, including enzymes, have to last for the entire lifetime of the red blood cell, which is normally 120 days.

P. acnes bacteria secrete many proteins, including several digestive enzymes.

She pioneered methods of directed evolution to create useful biological systems, including enzymes, metabolic pathways, genetic regulatory circuits, and organisms.

Many pharmaceuticals are designed for sublingual administration, including cardiovascular drugs, steroids, barbiturates, enzymes, and increasingly, vitamins and minerals.

Other factors in the GI tract help with immune function as well, including enzymes in saliva and bile.

These cells released more chemicals, including potent enzymes.

Produced in salivary glands, human saliva is 99.5% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes.

Milk contains dozens of other types of proteins beside the caseins including enzymes.

Some existing catalysts, including natural enzymes, contain indentations and cavities that might be mimicked by synthetic compounds related to carcerands.

Normal present medical procedure involves determination of numerous proteins in plasma including hormones and enzymes, some of them also determined by electrophoresis.