A few hours later, Johnson went into one of the treatment rooms with Grossman to get a stem cell injection straight into his brain. Earlier he’d provided 5 ounc

A few hours later, Johnson went into one of the treatment rooms with Grossman to get a stem cell injection straight into his brain. Earlier he’d provided 5 ounces of his blood, which had then been spun in a centrifuge so Grossman could separate out the plasma and put it through a secret process to “activate the stem cells.” Now, Johnson hopped onto a reclined exam table, lying on his back with his head angled toward the floor. Grossman pulled out a liquid-filled syringe. Instead of a needle at the end, it had a 4‑inch‑long, curved plastic tube, which the doctor coated with some lubricating jelly. He pushed the tube into one of Johnson’s nostrils, told the patient to take a big sniff, then pinched Johnson’s nose shut. They repeated the process for the other nostril. The procedure looked incredibly uncomfortable, but again, Johnson was unfazed, pulling in the stem cells with determination and excitement.