Accommodation refers to the condition in which an organ transplant functions normally by acquiring resistance to immune-mediated injury (especially), despite the presence of anti-transplant antibodies in the recipient. This status is associated with several modifications in the recipient as well as in the graft, such as previous depletion of anti-graft antibodies and their slow return once the graft is placed; expression of several protective genes in the graft; a Th2 immune response in the recipient; and inhibition of the membrane attack complex of complement.
Dehoux, J.-P., & Gianello, P. (2009). Accommodation and antibodies. Transplant Immunology, 21(2), 106-110. https://doi.org/10.1016/j.trim.2008.10.002 (Original work published 2009)