Light imaging elements in {HEAD ~ the bottom} of {TAIL ~ the fluid channel} may be used to image the object 
of
Light imaging elements in { HEAD ~ the bottom } of { TAIL ~ the fluid channel } may be used to image the object
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH