Have we run any centrifugal habitat experiments in space on animals to compare? The ISS is just a floating bunch of tubes. If/when Starship becomes viable, a r

Have we run any centrifugal habitat experiments in space on animals to compare? The ISS is just a floating bunch of tubes. If/when Starship becomes viable, a real space station becomes a real possibility. As I read once, solar / cosmic ray radiation shielding isn't about thick lead armor, instead an envelope/shield of air/water vapor that is a 100m thick works better. Is that still the thought on practical radiation shielding in space?