Fig 1.
Comparison of EBI ArrayExpress and NCBI Gene Expression Omnibus.
The number of overlapping data-series entries in ArrayExpress (left) and Gene Expression Omnibus (right).
Fig 2.
Three levels of AOE data flow are required to make the AOE index. Level 1 from ArrayExpress data, level 2 from GEO data in SRA via DBCLS SRA API, and level 3 from RNA-seq data in SRA, but not in GEO via DBCLS SRA API.
Fig 3.
Users can retrieve data of interest graphically in the AOE web interface.