Colorectal Cancer News

Dogs can smell some chemicals at concentrations approaching one part per trillion — roughly a tenth of a drop diluted into two Olympic-sized swimming pools — and trained dogs have identified lung and colorectal cancer from a person's breath alone. - ScienceBlog.com

Dogs can smell some chemicals at concentrations approaching one part per trillion — roughly a tenth of a drop diluted into two Olympic-sized swimming pools — and trained dogs have identified lung and colorectal cancer from a person's breath alone. ScienceBlog.com