The velocity of {HEAD ~ blood cells} in {TAIL ~ skin or other tissue capillaries} is determined by a laser Doppler technique 
The velocity of { HEAD ~ blood cells } in { TAIL ~ skin or other tissue capillaries } is determined by a laser Doppler technique
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH