Brett Keisel expected to return
Rookie wide receiver Antonio Brown (swollen knee) will be limited in practice and might not play Sunday. Tight end Matt Spaeth's status is uncertain because of a concussion he sustained Sunday against Oakland.
Safety Will Allen has been cleared to practice after sitting out two games with a concussion. Safety Troy Polamalu might be limited again in practice due to an Achilles' injury, as he was last week, but coach Mike Tomlin said Tuesday he is expected to play.
Copyright 2010 by The Associated Press
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