41. Betahistine has two modes of action . 42. These cell free systems facilitated investigations on the mode of action of bleaching herbicides that inhibit carotenoid formation. 43. There are multiple modes of action . 44. The mechanisms of intumescence and the mode of action of APP are described in a series of publications. 45. It is still to be determined what role ABCC2 plays in the mode of action for Bt resistance. 46. This reaction played a major role in understanding the mode of action of endiin antibiotics in the 1980s. 47. By the 1960s, it was thought that the mode of action of tricyclics was to inhibit norepinephrine reuptake. 48. However, limited data is available on defined relationships between toxic responses and chemicals with known modes of action . 49. The Security Annex specifies the deployment of the police force, the approved equipment and its modes of action . 50. 2 ) Mode of action class for citrus pesticides from the Fungicide Resistance Action Committee ( FRAC ) 20111.