<prompt> Relative to filgrastim G-CSF, sargramostim GM-CSFHas greater oral bioavailabilityIs more likely to cause thrombocytopeniaIs more likely to elicit an allergic reactionStimulates production of a wider variety of hematopoietic stem cells  <response>: Stimulates production of a wider variety of hematopoietic stem cells GM-CSF has wider biologic activity than G-CSF; it stimulates early myeloid stem cells in addition to cells destined become neutrophils. 