bamifylline , a 7-8 disubstituted theophylline derivative , reduces in a dose dependent way ( 1 x 10 ( -5 ) m , 1 x 10 ( -4 ) m and 1 x 10 ( -3 ) m ) the release of histamine , txb2 ( measured also as txa2-like material ) and srs-a ( as ltd4-like material ) during the immunological challenge of actively sensitized guinea-pig lungs perfused in vitro .
C0038091
srs-a
C0023544
ltd4