be expressed by

Simultaneously, the researchers identified which types of cells were -- and were not -- infected by L. donovani parasites based on the presence or lack of genes known to be expressed by these organisms.

In your grandparents' era, this would be expressed by muttering racial slurs to your friends over chicken wings during halftime.

But at the same time, it was pretty sad that an emotion that is as essential to our humanity as anger can’t be expressed by specific groups.

You’re going to have just a few basic platforms, and those platforms are going to be expressed by our brands in various ways.

Other kids could appear to be “overexcited” — that is, in a hyperactive, sensation seeking, or high-energy state that might be expressed by yelling, or bouncing and crashing around the room.