How to get the genes that are part of each intersection?

[anemartinezlarrinaga2898]

Hello,

I have managed to generate the plot I wanted, however, now I would want to get the amount of genes that are in each of barplot of the matrix. This means if in the first case I have 100 genes, I wanted to know which are this 100 genes that are common in all the sets!

Thanks you!