2-(1-methyl-1H-imidazol-4-yl)acetic acid (2-(1-methylimidazol-4-yl)acetic acid) is a plasma histamine derivative that is a biomarker for identifying lymphangioleiomyomatosis.

Glucose oxidase, an enzyme extracted from the fungus Aspergillus niger, is an important industrial enzyme in the food industry and is widely used in the deoxygenation of foods such as wine, beer, fruit juice, milk powder, and in the improvement of flour and prevention of browning of foods, etc. It has antioxidant and potential anticancer activities.

Endogenous peptide activator of intestinal guanylyl cyclase; secreted mainly by the gastrointestinal mucosa. Regulates water and electrolyte transport in intestinal and renal epithelia.