| The components in vog known to affect health are sulfur dioxide gas and tiny respirable particles. |
| Ultrafine particles are highly toxic to the lungs, even when they are formed from materials that are nontoxic, and when they are components of larger, respirable particles. |
| It melts long before it is red hot, and is then calcined, if it be in contact with respirable air. |
| The invention relates to a system for administering a respirable gas, particularly at a pressure level lying above the ambient pressure. |
| We currently have insufficient evidence about the mechanisms of the association between respirable pollutants from smoking or indoor air pollution and tuberculosis. |
| Under these circumstances, children could be exposed intensively and continuously to both inorganic and organic respirable toxins while outdoors. |
