I want to know the answer to the following question:
The tool that was invented to stain only a small fractions of neurons was called what?
All the background I'm provided with is that "Particularly critical was the invention of the Golgi stain, which (when correctly used) stains only a small fraction of neurons, but stains them in their entirety, including cell body, dendrites, and axon.". Is that enough to answer the question?