by the incubation with srs-a , srs and lts with arylsulfatase ( type v ) in ph 5.7 buffered solution at 37 degrees c for 30 min , srs-a and ltd4 were greatly inactivated and rat srs was slightly inactivated , but human srs and ltc4 were not inactivated at all .
C0038091
srs-a
C0023544
ltd4