Chicago played its 12th straight game without defending league MVP Derrick Rose, who missed the contest with a strained groin despite going through all of the team's workout earlier in the day.
The Bulls hope to have Rose back for their next contest Sunday.
The Bulls moved 2 1/2 games in front of Miami for the best record in the Eastern Conference and handed the Celtics their second straight loss. Boston is only a game in front of Philadelphia for the top spot in the Atlantic Division.
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