Comparison of cytokine and chemokine levels between myeloablative and nonmyeloablative SCT patients with and without GVHD. Patients with and without GVHD were subdivided into those who underwent myeloablative transplantation and those who underwent nonmyeloablative transplantation. Solid lines represent median markers. P values were calculated using the Mann-Whitney U test (*P < .05; **P < .01).