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 | .~ Separation or purification {6} | |
413 | DF | .~.~> Immunological separation or affinity chromatography |
414 | DF | .~.~> Ultra filtration or osmosis |
415 | DF | .~.~> Selective absorbtion, e.g., Ca phosphate sorbents, etc. {2} |
418 | DF | .~.~> Precipitation {1} |
422 | DF | .~.~> Solvent extraction {2} |
427 | DF | .~.~> Physical treatment |