A 'B symptom' is a general symptom that, when combined with other symptoms, often preceeds the diagnosis of lymphoma. Primary B symptoms include the following, and in order to be considered B symptoms, they generally must persist for at least six months: Unexplained low-grade fevers. Drenching lymphoma night sweats.
Propane: Liquefied Petroleum Gas (LPG). Propane, or liquefied petroleum gas (LPG), is a clean-burning fossil fuel that can be used to power internal combustion engines. LPG-fueled vehicles can produce significantly lower amounts of some harmful emissions and the greenhouse gas carbon dioxide (CO 2). LPG is usually less expensive than gasoline, it can be used without degrading vehicle performance, and most LPG used in U.S. comes from domestic sources. The availability of LPG-fueled light-duty passenger vehicles is currently limited.
In that form, it's just like natural gas: it's a fuel rich in energy that you can burn to release heat for cooking, heating, or powering something like a car engine. Artwork: Propane-based LPG is compressed into 274 times less space than its gases would normally occupy, forcing it to turn into a liquid.