15ac Sort of motive underlying what is revealed.(8) (??t??i?r) 23ac Research into this tiny organism regularly provokes controversy.(4-4) (s?e?-?e??) 26ac Contrary to the expression, brides do not walk up or down this.(5) (w?a?g) 32ac hired to put words into a politician`s mouth.(12) (s?e??h?l?t?r) 27ac Abbreviation for what distinguishes a product (1,1,1) (u,?,b)