Chemical Pneumonia Prognosis Prognosis depends upon the chemical publicity and person`s condition. For example, an elderly person with lung disease subjected to moderate amounts of vaporized ammonium chloride might suffer much more serious problems when compared with a young athlete without lung problems. Generally, the more serious the symptoms, the more likely the individual shall suffer short – and long-term complications. Short-term complications include additional organ injury furthermore to possible loss of life.Long-term complications include lung scarring and recurrent pneumonia.The researchers also used immune-blot assays to show that reconstituting the Caspase-8 deficient cells with Caspase-8 with mutations in the RXDLL domain did not result in EGF signaling. This shows that Caspase-8 mediates signaling through the RXDLL domain. The researchers had demonstrated in another study that Caspase-8 associates with Src previously, a protein known to be involved in malignancy cell proliferation. In this study they showed that interruption in this association disrupts EGF signaling indicating that Caspase-8 exerts EGF signaling through Src.