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

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