The present invention relates to novel cyclosporins, processes for their preparation, their use as pharmaceuticals and pharmaceutical compositions comprising them. The method employed has successfully analyzed enzymatic inhibitors for their chemical properties through the use of a neural network and associated algorithms. The ACKNACK response of a radio base station to mobile station transmissions may be used to detect link imbalance, identify poor reverse link channels, etc. A heat deflector includes a circular plate for supporting a basting adapter, and a downwardly dependent annular rim which closely engages the bottom pan.