in order to elucidate the working mechanisms of immunotherapy ( it ) , the in vitro productions of histamine , prostaglandin e2 ( pge2 ) and leukotriene c4 ( ltc4 ) were studied in 18 newly diagnosed and 20 hyposensitized ( greater than 2 yr ) asthmatic children .
C0012472
prostaglandin e2
C0004096
asthmatic