The word immunoglobulins 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: 32
Highest Scoring Words With Friends™ Play In The Letters immunoglobulins
:
Seven Letter Word Alert: (52 words)
billing, billion, boiling, booming, bousing, bulling, bullion, bullous, bumming, bunions, gnomons, goblins, gumboil, gummous, insulin, inulins, lignins, limning, linings, lionism, looming, loosing, lousing, milling, million, minibus, minimus, minions, mongols, mooning, moulins, mousing, mulling, muonium, niobium, niobous, noosing, numbing, oblongs, ominous, omnibus, sibling, sliming, smiling, soiling, soloing, summing, unbosom, unbungs, unnumbs, unsling, unslung