Sentence examples for when happening from inspiring English sources

This phenomenon, when happening to the tumor endothelium, supports tumor growth due to escape from immunity.

This implies that interactions, when happening, are usually strong (i.e., if the appropriate dangling ends are present, the probability of complex formation and replication is high).

"When this happened".

Remember when that happened?

Love when that happens.

Is that when it happened?

I hate when that happens.

When that happens, reform disappears.

I love when that happens.

Companies change when that happens.

That's when mistakes happen.