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