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The Browns opened Gabriel's (back) 21-day practice window Tuesday.
The Steelers signed Murphy-Bunting off the Buccaneers' practice squad Monday, Teresa Varley of the Steelers' official site reports.
The Steelers placed Harmon (foot) on injured reserve Monday, Teresa Varley of the team's official site reports.
Head coach Mike McCarthy said that Dowdle (toe) had a positive workout Friday and is "making progress" in his recovery, but the Steelers aren't yet certain if he'll be available to play Week 5 versus the Colts, Nick Farabaugh of PennLive.com reports.
The Steelers could be without Dean for "a couple of weeks" after he exited Thursday's 27-24 loss to the Browns due to an ankle injury, Ian Rapoport of NFL Network reports.
Harmon is expected to miss multiple weeks after exiting Thursday's 27-24 loss to the Browns due to a foot injury, Ian Rapoport of NFL Network reports.
Washington caught three of five targets for 27 yards and a touchdown in a loss to Cleveland on Thursday.
Hickman logged five tackles (one solo) and one pass defensed in the Browns' 27-24 win over the Steelers on Thursday.