A HUMAN NECESSITIES
A61 MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61K PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
A61K38/00 Medicinal preparations containing peptides
A61K38/16 Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
A61K38/43 Enzymes; Proenzymes; Derivatives thereof
A61K38/48 acting on peptide bonds (3.4)
A61K38/4886 Metalloendopeptidases (3.4.24), e.g. collagenase
A61K38/4893 Botulinum neurotoxin (3.4.24.69)