Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12920-015-0114-0/MediaObjects/12920_2015_114_Fig1_HTML.gif)
The steps involved in systems level analysis of data on oral squamous cell carcinoma (OSCC). a Microarray data collection and preprocessing of experiments to identify differentially expressed genes (DEGs). b Construction of the OSCC network and identification of an OSCC stage-associated module and of cancer hub genes. c Development and testing of a key hub gene-based classifier model by 5-fold cross-validation