Hierarchical clustering of literature co-occurrences of 1135 genes (rows) versus 177 cellular components (columns). A co-occurrence was only taken into account when at least three articles mention the gene-cellular component pair. Each gene had to have at least twice a high (1–100 scaled) relevance score of >50. Relative scores of less then 50 were masked in the TreeView program. Some of the cellular component concepts responsible for clustering of genes are indicated.