Words similar to upon

Example sentences for: upon

How can you use “upon” in a sentence? Here are some example sentences to help you improve your vocabulary:

It shouldn't have been a complete surprise when I walked into the elevator in my Washington office building and came upon Dick Morris clutching a book by the late Cardinal Bernardin.
He did nothing about scandals at the FSB (the successor agency to the KGB) when he was its director, and "[a]s prime minister, his only claim to fame has been to seize upon a truly bad situation in Chechnya as an excuse to wage an imperial war, one that punishes civilians in the name of protecting them."
Drawing upon her rich experience of life, Prudence (Prudie to her friends) responds to questions about manners, personal relations, politics, and other subjects.
Sphingomyelin content and luteal cell membrane fluidity decrease during luteolysis in vivo [ 48 49 50 51 ] . Ceramide, a product of sphingomyelin hydrolysis, is a potent stress-activated second messenger and is well established as a functional component of death receptor-mediated apoptosis [ 52 53 54 ] . Upon treatment of CLENDO cells with TNFα, we observed a rapid and sustained increase in the production of ceramide, suggesting that the sphingomyelin pathway is present and active in these cells.
Although myofibroblasts were not detected in vivo [ 51 ] , the propensity of keloid fibroblasts to express α-SMA in vitro and the loss of this protein upon matrix contraction (gel relaxation) do not allow one to dismiss a role for myofibroblasts in keloids.