Transgenic animals for producing specific isotypes of {HEAD ~ human antibodies} via {TAIL ~ non cognate switch regions} 
via
Transgenic animals for producing specific isotypes of { HEAD ~ human antibodies } via { TAIL ~ non cognate switch regions }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL