| The results indicate some horses have been administered alkalizing substances in excessive amounts. |
| By this process, a highly efficient separation of substances can be achieved. |
| It is often the substances used to bulk up heroin that prove most harmful and cause allergic or toxic reactions. |
| His perspective provides a framework for understanding the impact of xenobiotic substances on development and reproduction. |
| Contact with even small amounts of some substances can cause skin allergies. |
| The majority of substances identified were aliphatic or aromatic hydrocarbons. |
