Ulster centre Luke Marshall has been added to the Ireland squad for their Six Nations clash against Scotland at the weekend.

His inclusion was said to be in doubt after he suffered an injury in his club side's win over Zebre on Friday, but the centre is in contention to make his first appearance in the competition.

Fellow Ulster flanker Chris Henry is also in the squad despite suffering a knee injury on Friday, but he will undergo a scan on Monday to assess the seriousness of the knock.

Experienced international Ronan O'Gara is expected to start, meanwhile, with Jonathan Sexton still missing through injury.