immune serum

12 LETTERS · STARTS WITH I

immune serum is a valid 12-letter word worth 17 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1M3M3U1N1E1S1E1R1U1M3

1 + 3 + 3 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 3 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does immune serum mean?