concentrated upon

"When the virus is held in the NanoGripper's hand, a fluorescent molecule is triggered to release light when illuminated by an LED or laser. When a large number of fluorescent molecules are concentrated upon a single virus, it becomes bright enough in our detection system to count each virus individually."

And of course she did it in the way that she did: taking a penalty kick in the sixty-first minute, with all the attention and pressure of the game concentrated upon her.

I tuned, frowning, and concentrated upon the music at hand.

Major de Coverley straightened with astonishment at Milo’s effrontery and concentrated upon him the full fury of his storming countenance with its rugged overhang of gullied forehead and huge crag of a humpbacked nose that came charging out of his face wrathfully like a Big Ten fullback.

They are not concentrated upon the basic point at issue which is the amount of resources used in the first place.