This can be particularly useful when you want to know in what structures a gene is NOT expressed. There are instances when a tissue sample used in an expression assay cannot be matched with the anatomical breakdown of the current hierarchy. However, 'head' does not appear as a specific node in the current hierarchy, which is broken down mainly according to physiological systems. Another example would be an experiment that reports expression in 'dermomyotome' but does not specify in which somite expression was analyzed. There is no node for 'dermomyotome' that could be derived from unspecified somites.
Generic nodes are a short term solution.
We are exploring ways to represent the anatomy as a system of intersecting alternative hierarchies that will allow users to view and query the data from different anatomical and physiological perspectives. Selection list of assay types. Use this field to limit your search to assays of one or more selected types. Summarized Query Results Expression information is related to assays. Each assay contains some number of experimental results.