<prompt> Cells responsible for GVHD is -Immunocompetent T Cell recipientImmunocompetent B cell donorImmunocompetent T cell donorImmunocompetent B cell recipient  <response>: Graft-versus-host disease GVHDGVHD occurs when immunologically competent cells T cells or their precursors are transplanted into immunologically crippled recipients, and the transferred cells recognize alloantigens in the host and attack host tissues.Most commonly involved tissues in graft versus host diseaseLiverSkinGut 