Identification of Differentially Expressed Proteins.

<p>Log ratios for proteins (n = 860) present in ≥ 2 specimens from both 5 metastatic and 5 non-metastatic tumors in the training set are plotted (o). Thirty-one proteins exhibiting quantitative differences between metastatic and non-metastatic tumors with p ≤ 0.05 (two sided t-test) were designated differentially expressed (●).