This is looking like a neuroscience game-changer, we need to know about:
And when you thought simple bacteria were not very animal-like:
For more reading on this topic here are about 5,390 results for (brain cell equivalent to pili though not necessarily same function) Neuronal cilia, published in 2018 alone:
https://scholar.google.com/scholar?hl=en&as_ylo=2018&q=Neuronal+cilia
Where do we even begin studying all that wonderful new information!!!