...aerosols containing as little as 2.5 per cent brain tissue from mice... 2.5 percent? As in 1 part in 40 tissue? Is that not as ridiculous as it sounds? Edi

...aerosols containing as little as 2.5 per cent brain tissue from mice... 2.5 percent? As in 1 part in 40 tissue? Is that not as ridiculous as it sounds? Edit: Thinking on it, that probably means the suspension which was aerosolized rather than the aerosol itself, which explains the conclusion that 10% suspensions might be dangerous to handle. Is that normally how you measure aerosol concentration?