| 1 | So chemical residues are rarely found. | |
| 2 | Over 90 percent of all residues detected were in dairy cows and veal calves. | |
| 3 | This residue is thought to react with common indoor pollutants to create a toxic mix. | |
| 4 | European nations were sufficiently concerned about hormone residues to ban the use of growth promoters decades ago. | |
| 5 | Residues of cigarette smoke deposited on indoor surfaces can turn carcinogenic when they react with airborne chemicals. |