The preparation of antigen L using culture filtrates of live BCG is described. The procedure consisted essentially of precipitating this filtrate with 10% trichloroacetic acid in the presence of N-butyl alcohol 4% final concentration. The precipitate was chromatographed on carboxy-methyl-trisacryl-M
The immunomodulatory activities of different solvent extracts from the culinary-medicinal mushroom Tricholoma matsutake were studied in vivo in normal mice. The extracts were prepared using different solvents in an order of increasing polarity. The immunomodulatory activities were investigated by