Still another aspect of the invention pertains to isolated MRT polypeptides and active fragments thereof, such as {TAIL ~ peptides} having {HEAD ~ an activity} of an MRT polypeptide  
Still another aspect of the invention pertains to isolated MRT polypeptides and active fragments thereof , such as { TAIL ~ peptides } having { HEAD ~ an activity } of an MRT polypeptide
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH