L-Uridine is the enantiomer of D-uridine, a nucleoside that acts as a phosphate acceptor for nucleoside phosphotransferase, in the normal RNA component of a normal RNA isolated from Polyporaceae fungus Poria cocos (Schw.) L-Uridine has potential antiviral activity.

17β-Estradiol sulfate sodium (17β-Estradiol 3-sulfate sodium) is a neuroactive estrogen with vasoprotective properties that inhibits the growth of Neisseria brasiliensis and disrupts aquatic ecosystems.

Gastric mucin is a large glycoprotein which is thought to play a major role in the protection of the gastrointestinal tract from acid, proteases, pathogenic microorganisms, and mechanical trauma.