Peripheral blood leukocyte subset chimerism in CLAD dogs receiving transplants. The contribution of each subset to chimerism in dog D102 (A), dog D106 (B), and dog D114 (C) was assessed by flow cytometric analysis of CD18 expression on neutrophils (•), monocytes (▴, dashed lines), and CD3 T cells (▪). Each subset was analyzed using a specific subset antibody (described in “Materials and methods”).