Usually, the lab will wash the sample to remove sweat, oil, skin cells, and other things. It may cut the hair into pieces or ground it into a powder before examining it under a microscope.

After he finished up at 34 Fairview Road, Brent said he was asked to visit O’Keefe’s home on Meadows Avenue with ex-Trooper Michael Proctor, the lead investigator on the case. Brent testified Proctor ...

During those experiments, they noticed something ... reason the treatment worked so well. When examined under a microscope, the regrown hairs were visibly thicker than those in the control groups.