The word immunogenicity is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 30
Highest Scoring Words With Friends™ Play In The Letters immunogenicity
:
Seven Letter Word Alert: (22 words)
coining, comment, commune, commute, emoting, genomic, gummite, inocyte, meiotic, mention, metonym, mimetic, mincing, minting, mitogen, mountie, noncute, nonmute, omentum, unction, uniting, untying