| 530 / | HD | CHEMISTRY: NATURAL RESINS OR DERIVATIVES; PEPTIDES OR PROTEINS; LIGNINS OR REACTION PRODUCTS THEREOF |
| 300 | DF | PEPTIDES OF 3 TO 100 AMINO ACID RESIDUES {29} |
| 303 | ![]() | .~ Insulin; related peptides {2} |
| 304 | DF | .~.~> Metal complexes, e.g., Zn-insulin, etc. |
| 305 | DF | .~.~> Isolation or purification |