In {TAIL ~ another aspect}, the invention provides {HEAD ~ methods} for producing the transgenic non human animals of the invention 
In { TAIL ~ another aspect } , the invention provides { HEAD ~ methods } for producing the transgenic non human animals of the invention
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH