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 # Tutorial: Expression profiles, heatmaps and specificity
 
+The key feature of CoNekT is the inclusion of thousands, carefully annotated, publicly available RNASeq samples
+derived from the [Sequence Read Archive](https://www.ncbi.nlm.nih.gov/sra). For each gene a summary of its expression in
+the annotated samples, the expression profile, is available. Data for a collection of genes can be used to create
+heatmaps and by applying various statistics genes specific for certain conditions, tissues or organs can be detected.
+
 ## Expression Profiles
 
+
+
 ## Heatmaps
 
 ## Expression Specificity
 
-## Export *All* expressed genes
+## Export *all* expressed genes
 
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