Rams RB Steven Jackson and rookie QB Keith Null will start in Sunday’s game against the Texans, according to a source with knowledge of the situation.

Bills WR Terrell Owens is active and will start Sunday against the Patriots, NFL Network’s Kara Henderson reports.

Vikings WRs Sidney Rice and Percy Harvin are expected to play against the Panthers on Sunday night.

The NFL has joined with the Boston University Center for the Study of Traumatic Encephalopathy in an effort to generate better research on the impact of concussions on the brain, according to a league source. Specifically, the partnership will encourage the donations of brains to the center for study, and the league is also making a significant financial commitment, prepared to go above $1 million or more if necessary, according to a source.

The Falcons will welcome RB Michael Turner back to their lineup, but QB Matt Ryan‘s status for Sunday’s game against the Jets is a game-time decision, NFL Network’s Jason La Canfora and Michael Lombardi report.

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Eagles TE Brent Celek will play Sunday against the 49ers, according to a source with knowledge of the situation.

Cardinals WR Larry Fitzgerald is expected to play Sunday against the Lions, according to a source with knowledge of the situation.

Cowboys LB DeMarcus Ware, a game-time decision following a neck injury last week, made his presence felt against the Saints after not practicing during the week.

Mike Holmgren will not be returning to the Seahawks, the team announced Saturday, ending any speculation that Seattle’s former coach and general manager would be re-hired to run the team’s football operations after a year off from football.

The Patriots will be thin along both lines during Sunday’s game against the Bills.

The Chiefs activated WR Dwayne Bowe from the suspended list Saturday, according to the team’s official Web site, meaning he could play Sunday against the Browns.

Cowboys LB DeMarcus Ware is active for Saturday night’s game against the Saints, six days after he sustained a neck injury that put his status in doubt.

Bengals WR Chad Ochocinco apparently has reversed course after saying he planned to wear the No. 15 jersey of deceased teammate Chris Henry. Ochocinco said he doesn’t want to be a distraction.