<prompt> Chromosomal translocation characteristic in acute promyelocytic leukemia is:t 15; 17t 22; 9t 21; 17t 8; 21  <response>: In AML with the t15;17,acute promyelocytic leukemia M3 stage ,auer rods present most common stage associated with DIC t8,21 AML With maturation stage M2 stage t16,16 associated with best prognosis. Presence of FAGGOT CELLS is a characterstic feature of AML M3 acute promyelocytic leukemia Faggot cells are cluster of auer rods shown in image below All-trans retinoic acid ATRA- induce the neoplastic promyelocytes to differentiate into neutrophils rapidly. 