
Still no REACTION.
The Big Bang Theory Season 7, Episode 5

...the success or failure of the date would
be based on the biochemical REACTION...
The Big Bang Theory Season 1, Episode 3

That's tissue inflammation.
It's a REACTION to your radiotherapy.
Breaking Bad Season 2, Episode 9

The REACTION has begun.
Breaking Bad Season 5, Episode 14

because, of course, this is an
exothermic REACTION, which means
Breaking Bad Season 5, Episode 14