The full name of geographic database is gene expression.

OMNIBUS is a gene expression database created and maintained by the National Biotechnology Information Center NCBI. Founded in 2000, it contains the quantitative gene expression data of Qualcomm submitted by research institutions all over the world, that is to say, as long as a paper has been published, the data of gene expression detection involved in the paper can be found in this database.

2. What are the search items in 2.GEO database?

There are two most commonly used methods. If you know the GSE number, you can use the website/article/1 100.

The other is to download through the entry gene search of NCBI homepage. Usually, you don't know the GEO number, so you can filter the desired GEO data by sample type, experimental processing, platform information, etc.: https://www.ncbi.nlm.nih.gov/, go to the NCBI homepage, select GEO DataSets for the search data, and select GEO Profiles if searching for a gene expression.