1. ABC suggested that osmium tetroxide would cause victims to choke to death. 2. The cells are black as a result of the effects of osmium tetroxide . 3. The most common compound exhibiting the + 8 oxidation state is osmium tetroxide . 4. "' 5, 6-Dihydroxycytosine "'can be formed from treatment of DNA with osmium tetroxide . 5. This eliminated the need to use osmium tetroxide , a rare, expensive, and dangerous chemical. 6. This method involves adding a high concentration of formamide to a osmium tetroxide fixative. 7. He improved fixation methods, for instance, his solution of potassium dichromate and osmium tetroxide . 8. Osmium powder has the characteristic smell of osmium tetroxide . 9. This dramatically reduces the amount of the highly toxic and very expensive osmium tetroxide needed. 10. The osmium tetroxide molecule is tetrahedral and therefore non-polar.