
...and look for the seminar
on MOLECULAR positronium, then...
The Big Bang Theory Season 1, Episode 10

I am making MOLECULAR cocktails.
The Big Bang Theory Season 8, Episode 21

Don't rush it. We may be dealing
with befoulment on a MOLECULAR level.
The Big Bang Theory Season 6, Episode 9

...on MOLECULAR positronium.
The Big Bang Theory Season 1, Episode 10

How about a MOLECULAR sieve?
The Big Bang Theory Season 2, Episode 18