I should dig for it, but I saw a study from the 1960's where the researcher exposed dogs to high levels of pm2.5 uranium oxide dust. It collected in the dogs lu

I should dig for it, but I saw a study from the 1960's where the researcher exposed dogs to high levels of pm2.5 uranium oxide dust. It collected in the dogs lungs. But a lot also ended up in associated lymph nodes. Doesn't leave you with a warm feeling about things like diesel exhaust.