Puromycin is an antibiotic protein synthesis inhibitor. It inhibits protein synthesis by binding to RNA. It also serves as an anticancer drug by suppressing the growth and metastasis in esophagus cancer cells by Akt phosphorylation. It is an antineoplastic and antitrypanosomal agent and is used in research as an inhibitor of protein synthesis.

Piperacillin is a semisynthetic, broad-spectrum, ampicillin derived ureidopenicillin antibiotic proposed for pseudomonas infections.

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.