Neutral regular insulin.
D000818:Animals; D002021:Buffers; D002417:Cattle / Q000276:immunology; D004339:Drug Compounding; D004355:Drug Stability; D006863:Hydrogen-Ion Concentration; D007122:Immunoelectrophoresis; D007328:Insulin / Q000032:analysis / Q000138:chemical synthesis; D012995:Solubility; D013552:Swine / Q000276:immunology
D002021:Buffers; D007328:Insulin