Focal intestinal metaplasia is the potentially reversible change from a fully differentiated stomach cell type to an intestinal cell type. It is associated with significantly increased risk of cancer. . Proper diagnosis and treatment can reduce the risk of gastric cancer. slide 1 of 6.
The ozone depletion potential (ODP) of a compound is a simple measure of. its ability to destroy stratospheric ozone. It is a relative measure: the ODP of CFC-11 is defined to be 1.0, and the ODP's of other compounds. are calculated with respect to this reference point. Thus a compound with.
Ozone is an unstable molecule and over time will decompose into O 2 and a free Oxygen. The layer of ozone in the upper atmosphere is continually disintegrating and being replenished. Ozone is not specifically toxic, but is dangerous to breathe, it causes or contributes to asthma and breathing difficulties.