Expression data formats
Read about technical details of these data formats in 
Micro array data formats.
| File type | Suffix | Import | Export | Description | 
|---|
| Affymetrix CHP | .chp/.psi | X |  | Expression values and annotations | 
| Affymetrix pivot/metric | .txt/.csv | X |  | Gene-level expression values | 
| Affymetrix NetAffx | .csv | X |  | Annotations | 
| CLC | .clc | X | X | Rich format including all information | 
| Excel | .xls/.xlsx |  | X | All tables and reports | 
| Generic | .txt/.csv | X |  | Expression values | 
| Generic | .txt/.csv | X |  | Annotations | 
| GEO soft sample/series | .txt/.csv | X |  | Expression values | 
| Illumina | .txt | X |  | Expression values and annotations | 
| Table CSV | .csv |  | X | Samples and experiments | 
| Tab delimited | .txt |  | X | Samples and experiments |