1 Fast, labored breathing: Fluid in the smallest airways (the alveoli) causes pneumonia, an infection due to a virus or bacteria. 2  Pneumonia causes fast, labored breathing, occasionally cyanosis, a persistent cough, and crackly sounds (rales) when listened to with a stethoscope.
Definition of BOTULINUM. : a spore-forming bacterium (Clostridium botulinum) that secretes botulinum toxin.â botÂ·uÂ·liÂ·nal \-ËlÄ«-nÉl\ adjective. a spore-forming bacterium (Clostridium botulinum) that secretes botulinum toxin.
From Wikipedia, the free encyclopedia. Botulinum toxin is a medication and a neurotoxic protein produced by the bacterium Clostridium botulinum, and is known to be very toxic with an LD50 of roughly 0.005â0.05 Âµg/kg. Despite its deadly toxic effect, it is sometimes used in very small doses to treat muscle spasms.