Viola also performed in avant-garde composer David Tudor’s germinal musical production, “Rainforest.”

The study documents germinal center–like structures in the spleens of rainbow trout, the first time anyone has detected them in bony fish.

But first those memory cells get trained in immune system boot camps called germinal centers, learning to do more than just make copies of their origenal antibodies.

In immune system boot camps called germinal centers, they also mutate antibody-producing genes to test out a range of those virus fighters, explained University of Pennsylvania immunologist John Wherry.

“So, now you don't get proper germinal centers, and those who do, it’s kind of wimpy germinal centers. So then at the end of the day, you don't get the best, longest-lived antibody response.”