BOSTON — The Bruins further juggled their lines today during practice at TD Garden.

They had made some maneuvers in the third period of last night’s loss to Carolina, but those changes were thrown out of whack by a host of penalties.

Here’s what today’s lines looked like:

Lucic-Kelly-Seguin
Marchand-Bergeron-Horton
Caron-Krejci/Peverley-Pouliot
Paille-Campbell-Thornton

“I wish I could stand here and pretend I’m a genius. But you know what, I don’t know what I’m going to get. What I know is that what I was getting before wasn’t enough,” said head coach Claude Julien about the line changes. “So I just felt the need to make those changes. We’ve kind of put certain guys together for specific reasons. … It’s never a bad thing to mix guys up a little bit because sometimes it brings that burst of energy, it’s a new challenge and sometimes it [changes] things that maybe are stale.”

The Bruins skated with seven defenseman, as Adam McQuaid missed practice. Julien said he is day-to-day.

“I thought he was certainly as close as could be to coming back,: said Julien, who noted that no one can tell if McQuaid suffered a concussion or not so the team is treating this injury like it is one. “But there’s some issues where we pulled him back again. It’s a little bit longer than we predicted.”

Krejci said he’s 50/50 to return from his core injury and face Toronto Thursday night at TD Garden. Steven Kampfer was cleared for contact and could be a game-time decision depending on what the doctors say, according to Julien.

Joe Corvo said his neck was a little sore but otherwise he was fine after crashing into the boards because of a shove from Brett Sutter in the first period last night. Corvo returned for the second period and finished the game.