Pro Bowler A.J. Green carted off

— -- CINCINNATI -- Pro Bowl receiver A.J. Green was carted off at the start of the Bengals' practice Wednesday after apparently aggravating an injury to his right big toe.

During the open portion of the Bengals' practice and moments after the team finished undergoing stretching and plyometrics, Green walked over to the side of the practice fields and took off his right cleat before throwing it hard to the ground and slamming down his helmet, too. He was clearly frustrated with the injury, which dates back to the season opener in  Baltimore.

After speaking briefly with coach Marvin Lewis, Green put his shoe back on and got on a green cart with a trainer, who drove him back across the street and into Paul Brown Stadium for immediate observation. As he rode by reporters standing nearby, Green let out an audible sigh.

Green previously told reporters that he suffered the injury that he called "something like turf toe, but not as bad" during the first quarter of the Ravens game. He battled through the pain, though, even catching a 77-yard, go-ahead touchdown that helped give the Bengals the 23-16 Week 1 win. He ended up missing the next game because of the injury, but he came out and caught six passes for 102 yards in the Week 3 win over the Tennessee Titans. He added five catches for 81 yards and a touchdown in the Bengals' 43-17 loss at New England on Sunday night.

In addition to Green's departure, the Bengals also were without offensive guard Mike Pollak, receiver Marvin Jones, linebacker Vincent Rey and defensive tackle Brandon Thompson during Wednesday's practice, Cincinnati's first since the weekend's loss. Linebacker Vontaze Burfict was back at practice after missing the last two games with a concussion.

The team has been without Jones since training camp. He broke his foot in the preseason but returned to practice from that injury two weeks ago. Two practices in, he tweaked an ankle and hasn't practiced since.