Whole body irradiation is often used in the art to create hematopoietic space and thus promote {HEAD ~ engraftment}, chimerism, and {TAIL ~ tolerance} 
Whole body irradiation is often used in the art to create hematopoietic space and thus promote { HEAD ~ engraftment } , chimerism , and { TAIL ~ tolerance }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL