Tolcapone inhibits the activity COMT, an enzyme which degrades dopamine. This protein preferentially degrades benzylamine and phenethylamine. Moisture degrades the weak UF molecules, resulting in potentially harmful formaldehyde emissions. Plastic waste emits carbon dioxide when it degrades. Endoplasmic reticulum degrades and mitochondria swell up and eventually disintegrate. Every desire degrades us, and renders us slaves of what we desire. Endothelial ADPase degrades ADP and prevents this from happening. So the reliability of circuits degrades severely. Galvanic corrosion is a process that degrades metals electrochemically. Petroleum ether degrades rapidly in soil and water. The retention, therefore, degrades exponentially with reduced write current. With no further explanation, a sadistic madman degrades, tortures and mutilates them. In scattering tissue, however, image quality rapidly degrades with increasing depth. However, as the table becomes filled with more elements, open addressing's performance degrades exponentially. The fungus Aspergillus fumigatus effectively degrades plasticized PVC.