A display apparatus allowing observation of the abnormal state of control target equipment is provided. The apparatus may include an event receiving module, a handover determining module, and an inter-frequency processing module. The supporting bracket has a sidewall defines two guiding slots for receiving the first and second positioning post in a first direction. In a second embodiment there is a single arched strip spring modified to mount onto a ball-shaped head. An example of a modified form of a KRT5, KRT7, NapsinA, TTF1, TP63, and MUC1 fragment peptide is phosphorylation of a tyrosine, threonine, serine, andor other amino acid residues within the peptide sequence.