Dan Leavy and James Ryan are back in training and in contention to return for Leinster in this weekend's Pro14 derby against Munster.
Leavy and Ryan suffered head injuries in the 39-16 win at the Dragons at the start of September.
Having completed their return-to-play protocols, the pair are available for the Aviva Stadium derby, with Jack McGrath potentially providing Leo Cullen with another boost.
The prop is making good progress after injuring his knee in training a few weeks ago and has been reintroduced to the training programme.
Sean O'Brien came through his first game since last April in good nick. He came off the bench 25 minutes into the bruising defeat of Connacht on Saturday and had no flare-up of his past hip and shoulder problems.
O'Brien replaced Rhys Ruddock at the Sportsground, whose hip injury is being assessed, while Jordan Larmour is also being monitored having taken a knock to his hip out west.
Meanwhile, Munster came out of their hammering of Ulster with no fresh concerns.
They ran in nine tries in a 64-7 victory at Thomond Park against under-strength opponents.
Tyler Bleyendaal is in full training and continuing to work towards his long-awaited comeback from a neck problem.
Full-back Mike Haley was withdrawn from the squad ahead of the Ulster clash due to a tight hamstring and is being monitored.
