leukotriene receptor antagonists
Zafirlukast, montelukast and pranlukast are all cysteinyl leukotriene receptor       antagonists that have recently been approved for the treatment of asthma.
Zafirlukast, montelukast and pranlukast are all cysteinyl  @SUBJECT$  that have recently been approved for the  @PREDICAT$  of  @OBJECT$ .