- Primary autologous count recovery with < 5% donor CD3 peripheral blood chimerism at count recovery and without relapse III. Kinetics of chimeric reconstitution. IV. Incidence of neutrophil engraftment by day 42. V. Incidence of platelet engraftment by six months. VI. Incidence of grade II-IV and III-IV acute graft-versus-host disease (GvHD) at day 100.