Well, there's a difference between something entering your body through your digestive tract, and something entering your body directly through the bloodstream.

Well, there's a difference between something entering your body through your digestive tract, and something entering your body directly through the bloodstream. Additionally, different substances have different bioaccumulation characteristics - some substances may accumulate in only in specific tissues (fat, muscle, etc.), a combination of tissues, or none. How an insecticide bioaccumulates in cattle would affect their suitability for beef.