FOXBORO, Mass. — We’re on Day 13 of Jamie Collins watch, and nothing has changed.

The New England Patriots starting linebacker remained out of practice Friday with a mysterious illness. Collins first was placed on the injury report Nov. 7.

Cornerback Justin Coleman (hand) and wide receiver Julian Edelman (foot) also didn’t participate in Friday’s walk-through.

Defensive end Chandler Jones (abdomen) and defensive tackle Alan Branch (elbow) both popped up on the injury report Thursday but were present for Friday’s session.

The Patriots will hold a practice Saturday and a walk-through Sunday in anticipation for their Week 11 Monday night matchup with the Buffalo Bills.

Thumbnail photo via Mark L. Baer/USA TODAY Sports Images

Thumbnail photo via Oct 25, 2015; Foxborough, MA, USA; New England Patriots defensive end Chandler Jones (95) points during the first half of a game against the New York Jets at Gillette Stadium. Mandatory Credit: Mark L. Baer-USA TODAY Sports