Search data in geo database

GEO database https://www.ncbi.nlm.nih.gov/gds/

GEO DataSets and GEO Profiles yes NCBI Of Entrez Part of the database network . Like these other databases , Just in GEO DataSets or GEO Profiles Enter keywords in the search box of , You can find interesting data . stay GEO DataSets and GEO Profiles Advanced search and restricted pages for page header links , It is very helpful for the construction of complex queries . To build a complex query , Specify search criteria 、 Their fields , And use the following syntax to perform Boolean operations on conditions .

term [field] OPERATOR term [field]

notes ：OPERATOR is the Boolean operator ('AND', 'OR', 'NOT' must be capitalized).

Common fields are ：
All Fields,Title,MeSH Terms,Description,Number of Samples,Supplementary Files,Update Date,GEO Accession,Organism

Search Examples:

Search by...	Search text
Free text	smoking cancer
Keywords and species	(smok* OR diet) AND (mammals[organism] NOT human[organism])
Studies in the NIH Roadmap Epigenomics project	"roadmap epigenomics"[Project]
Study type	"expression profiling by high throughput sequencing"[DataSet Type]
Studies with between 100 and 500 samples	100:500[Number of Samples]
Studies with CEL files	"cel"[Supplementary Files]
DataSets that have 'age' as an experimental variable	"age"[Subset Variable Type]
Author	smith a[Author]
Published between January and June 2007	2007/01:2007/06[Publication Date]
Platform accession	GPL570
Studies with PubMed identifiers	"gds pubmed"[Filter]

About MeSH  https://www.nlm.nih.gov/mesh/meshhome.html

Example

gastric tumor[MeSH] 

gastric tumor[Title] 

gastric tumor[Title] AND Homo sapiens[Organism] 

Colorectal Neoplasms[MeSH]

Colorectal Neoplasms[MeSH] AND Homo sapiens[Organism] 

Colorectal Neoplasms[MeSH] AND Homo sapiens[Organism] AND 100:500[Number of Samples] AND 

Colorectal cancer[All Fields] AND Homo sapiens[Organism] 

Colorectal cancer[MeSH  Terms] AND "Homo sapiens"[Organism] 

(survival OR prognosis OR prognostic OR outcome OR death OR relapse OR recurrence) AND Colorectal Neoplasms[MeSH] AND Homo sapiens[Organism] AND (metastatic OR metastasis) AND 10:10000[Number of Samples] AND GPL570[Related Series]

Colorectal Neoplasms[MeSH] AND immunotherapy[Title] 

Colorectal Neoplasms[MeSH] AND primary[Title] 

Colorectal Neoplasms[MeSH] AND primary[metastatic]  

(intestinal polyps[MeSH] OR Colorectal Neoplasms[MeSH]) AND Homo sapiens[Organism] AND primary[Title] AND AND 10:10000[Number of Samples] 

Reference resources

https://www.ncbi.nlm.nih.gov/geo/info/qqtutorial.html