Brian O'Driscoll has beaten his stomach bug in time to equal George Gregan's world-record 139 caps in Ireland's RBS 6 Nations match against England at Twickenham on Saturday.
Stalwart centre O'Driscoll will match former Wallabies scrum-half Gregan's mammoth total this weekend as Ireland field an unchanged line-up from their impressive 26-3 win over Wales two weeks ago.
O'Driscoll is now in line to surpass Gregan's record before retiring at the end of the Six Nations.
The 35-year-old will notch 131 Ireland caps in west London on Saturday, with his eight Lions honours bumping him up to equal status with Gregan.
Head coach Joe Schmidt has made two changes to the replacements bench, one enforced with lock Iain Henderson replacing Dan Tuohy who broke his arm against Wales.
The other change sees Jordi Murphy replace Munster's Tommy O'Donnell, with the Leinster flanker primed for his international debut if he joins the fray.
Ireland team: R Kearney (Leinster); A Trimble (Ulster), B O'Driscoll, G D'Arcy, D Kearney (all Leinster); J Sexton (Racing Metro), C Murray (Munster); C Healy (Leinster), R Best (Ulster), M Ross, D Toner (both Leinster), P O'Connell (capt), P O'Mahony (both Munster), C Henry (Ulster), J Heaslip (Leinster).
Replacements: S Cronin, J McGrath, M Moore (all Leinster), I Henderson (Ulster), J Murphy, I Boss (both Leinster), P Jackson (Ulster), F McFadden (Leinster).