<prompt> Specific stain for myeloblasts is:Sudan blackPASMyeloperoxidase MPOLAP  <response>: Lymphoblast: PAS positive.Myeloblast: Sudan black, myeloperoxidase and non-specific esterase. MPO is specific for myeloid differentiation. Sudan Black B reactivity is similar to MPO in myeloblasts and monoblasts. The specificity of Sudan Black is less than MPO. 