<prompt> In acute solid organ Graft vs host disease, which of the following is not seen?Occurs within 100 days of transplantationSkin is the most common organ involvedPreformed antibodies are involvedMay lead to cholestatic jaundice  <response>: Answer- C. Preformed antibodies are involvedPreformed antibodies are involved in hyperacute rejection not in GVHD.Acute GVHD occvs within 100 days usually 10-50 days of bone marrow transplantation. 