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