When this point is reached, the laser energy is stopped and a cool fluid is immediately applied to the ablation site to create additional thermal stresses, resulting in {HEAD ~ further ablation} of {TAIL ~ tissue} by the thermal expansion stress of rapid cooling 
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When this point is reached , the laser energy is stopped and a cool fluid is immediately applied to the ablation site to create additional thermal stresses , resulting in { HEAD ~ further ablation } of { TAIL ~ tissue } by the thermal expansion stress of rapid cooling
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 TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH