Flanker John Barclay was among 13 players called up to join the Scotland squad on Monday as they prepare for Sunday's clash with Ireland.
Barclay missed the opening RBS 6 Nations games after being out for two months with a hamstring injury, but has since made his competitive comeback with Glasgow.
The additional players join all but one of the 23 who were stripped for the 34-10 triumph over Italy on February 9 with prop Euan Murray unavailable on Sunday because of his religious beliefs.
Hooker Dougie Hall is back training after being forced to miss the Italy game with a knee injury.
Fellow Glasgow forwards Jon Welsh and Tom Ryder have also been called up along with Sale pair Alasdair Dickinson and Richie Vernon and Edinburgh lock Grant Gilchrist.
Glasgow backs Sean Kennedy, Alex Dunbar, Peter Horne and Peter Murchie are also included in the extended squad along with Worcester winger Nikki Walker and Bath fly-half Tom Heathcote.
Interim head coach Johnson is due to name his team on Wednesday.
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.