Fig. 2

Clustering analysis of primary tumors based on the protein expression with each degree of lymph node metastasis. A In the clusters with high HER2 expression, the expression levels of c-Met and p-Smad2 were not very high. B In the clusters with high HER2 expression, the expressions of c-Met and p-Smad2 were high. C In the clusters with high HER2 expression, the c-Met and p-Smad2 expressions were high