530 / | HD | CHEMISTRY: NATURAL RESINS OR DERIVATIVES; PEPTIDES OR PROTEINS; LIGNINS OR REACTION PRODUCTS THEREOF |
350 | DF | PROTEINS, I.E., MORE THAN 100 AMINO ACID RESIDUES {14} |
412 | DF | .~ Separation or purification {6} |
413 | .~.~ Immunological separation or affinity chromatography |