For example, the Digestive System Tumor Tissue Microarray (Catalog NO. MOCT060) comprises 140 cases, each containing 80 cores representing 6 distinct tumor types found in the digestive system. Ten cases were analyzed for each tumor type: esophagus squamous cell carcinoma, gastric adenocarcinoma, colon adenocarcinoma, rectum adenocarcinoma, hepatocellular carcinoma, and pancreas adenocarcinoma. These cases were compared to their respective normal adjacent tissues. Additionally, the microarray included normal tissues from the esophagus, stomach, colon, rectum, liver, and pancreas, with 2-5 cases analyzed for each type, totaling 7 cases.