Centre Alex Dunbar, scrum-half Henry Pyrgos and hooker Fraser Brown have all recovered from injuries in the past fortnight to earn selection in the squad that will convene at the national stadium in Edinburgh tomorrow.

Dunbar was part of the original group named ahead of the championship however a posterior thigh strain sustained against Racing 92 in the European Champions Cup kept him out of contention.

Since returning to fitness Dunbar has played in his club’s Guinness PRO12 wins over Dragons and Cardiff Blues, scoring on his return in Newport.

Pyrgos and Brown were both part of Scotland’s Rugby World Cup campaign, however respective wrist and ankle injuries ruled them out of the early part of the RBS 6 Nations campaign.

Like Dunbar, Brown – who takes the place of Edinburgh Rugby hooker George Turner – made his comeback against the Dragons and Cardiff, while Pyrgos played his first game in over five months when he started on Sunday.

Matt Scott injury:

Edinburgh Rugby and Scotland centre Matt Scott will have a MRI scan at the Spire Murrayfield Hospital today (Monday) to assess the extent of the damage sustained to his elbow in his club’s match against Connacht on Friday.

Scotland squad for 2016 RBS 6 Nations Round 4:

Forwards (20): John Barclay (Scarlets), Fraser Brown (Glasgow Warriors), David Denton (Bath Rugby), Alasdair Dickinson (Edinburgh Rugby(, Zander Fagerson (Glasgow Warriors), Ross Ford (Edinburgh Rugby), Jonny Gray (Glasgow Warriors), Richie Gray (Castres), John Hardie (Edinburgh Rugby), Rob Harley (Glasgow Warriors), Moray Low (Exeter Chiefs), Stuart McInally, Willem Nel (Edinburgh Rugby), Gordon Reid, Josh Strauss (Glasgow Warriors), Rory Sutherland (Edinburgh Rugby), Tim Swinson (Glasgow Warriors), Ben Toolis, Hamish Watson (Edinburgh Rugby), Ryan Wilson (Glasgow Warriors).

Backs (16): Mark Bennett, Alex Dunbar, Grayson Hart (Glasgow Warriors), Sam Hidalgo-Clyne (Edinburgh Rugby), Stuart Hogg (Glasgow Warriors), Ruaridh Jackson (Wasps), Peter Horne (Glasgow Warriors), Greig Laidlaw CAPTAIN (Gloucester Rugby), Sean Lamont (Glasgow Warriors), Duncan Taylor (Saracens), Henry Pyrgos, Finn Russell (Glasgow Warriors), Matt Scott (Edinburgh Rugby), Tommy Seymour (Glasgow Warriors), Tim Visser (Harlequins), Duncan Weir (Edinburgh Rugby).