The different light sources may allow for differentiation of different tissue types, for example, bone, fat, blood vessels, and nerves, where blue light is preferred for achieving {HEAD ~ good contrast} between nerves and {TAIL ~ other tissues} 
between
The different light sources may allow for differentiation of different tissue types , for example , bone , fat , blood vessels , and nerves , where blue light is preferred for achieving { HEAD ~ good contrast } between nerves and { TAIL ~ other tissues }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL