Seven Bulls will run out at Odsal next week as the Origin series comes to Bradford.
Jamie Peacock, pictured, Paul Anderson, Lee Gilmour, Leon Pryce and Karl Pratt have all been selected for the Yorkshire side who will take on Paul Deacon, Mike Forshaw and Lancashire in just eight days.
The squads go into camp on Sunday after they have completed their Super League duties ready for the eagerly-awaited clash.
Saints stars Sean Long, Paul Sculthorpe, Keiron Cunningham and Paul Wellens will have to make the trip to Odsal twice in five days as Ian Millward's men take on the Bulls on Friday ahead of next Wednesday's mouth-watering Origin battle.
Yorkshire coach Graham Steadman revealed his side today although there may be changes after the weekend depending on any injuries picked up in the Super League clashes.
Lancashire, winner of both games last season, are clear favourites for the match-up, reduced to one-game this season.
Stuart Fielden misses out on a chance to go head to head with Barrie McDermott due to his on-going knee injury.
l Bulls hooker James Lowes is to be investigated by the RFL's Disciplinary and Compliance Unit following their defeat to Wigan Warriors on Saturday.
The 33-year-old has been referred for investigation for alleged verbal abuse of referee Karl Kirkpatrick during the 35-22 defeat at Odsal on Saturday night.
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