Len Schleifer explains how Regeneron got its name
It comes from regenerating neurons.
Regenerating neurons. Within the middle of Regeneron was the word "gene." Some may say that Mike Brown's two contributions to the world of science, where one is Nobel Prize, and the other is coming up with the name Regeneron; we think that the latter may be more valuable. But he had a U in it, Gilman the Forever Editor took out the U and it read "Regeneron"—regenerating neurons with gene in the middle. And so I had nothing to do with the name whatsoever. That's how that came about.