271 Interleukin-1β expressing inflammatory macrophages in temporal arteries affected by giant cell arteritis. (12th April 2019) - Reynolds, Gary; Maunder, Daniel; Stephenson, Emily; Botting, Rachel; Fletcher, James; Lorenzi, Alice R; Thompson, Ben; Heaney, Jonathan; Villani, Alexandra-Chloe; Isaacs, John D; Haniffa, Muzlifah