I am wondering if anyone knows anything about anti-bodies in the blood.I have aml and I had to go for a transfsion today and when they went to crossmatch my blood they came in and said I have an developed an anti-body in my blood.They had a hard time finding donor blood now that I wont have a reaction to.They said I could have gotten it from the last transfusion or it could have came up from an infection I had ...even one from along time ago.I dont really know what it is.