In the seventh aspect, the invention features a method for constructing {TAIL ~ a nematode} having {HEAD ~ a genetic deletion} in a region of choice 
In the seventh aspect , the invention features a method for constructing { TAIL ~ a nematode } having { HEAD ~ a genetic deletion } in a region of choice
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH