906.441; 947.543; 977.467; 1038.516; 1054.509; 1127.56; 1206.539; 1271.66; 1287.698; 1510.78; 1564.75; 1610.753; 1626.757; 1642.754; 1767.996; 1788.879; 1825.007; 1953.141; 2014.014; 2272.117; 2455.135; TRYPSIN