1 2 3 1 _ _ _ 2 _ _ _ 3 _ _ _ ACROSS 1) a solution containing a phosphate buffer 2) a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen 3) a slight amount or degree of difference DOWN 1) a proportion in relation to a whole (which is usually the amount per hundred) 2) an undergarment worn by women to support their breasts 3) a communicable infection transmitted by sexual intercourse or genital contact ** Scroll down for solution. ** Are you sure you want to peek? pbs crt tad