3.4.23.20 2.5 - milk casein 30586, 30594 3.4.23.20 2.6 - bovine serum albumin 30585 3.4.23.20 3 - hemoglobin, trypsinogen 30595 3.4.23.20 3 3.5 hemoglobin, egg albumin 30586 3.4.23.20 3.4 - trypsinogen 30585 3.4.23.20 3.6 - hydrolysis and transpeptidation of small substrates 30585 3.4.23.20 4 - - 752532 3.4.23.20 6 - - 30594, 753904 3.4.23.20 9 - - 755308