Help & Documentation
How to use Exologue and what the terms mean.
How to use each page
Ask natural-language questions over the Exologue database.
- Ask about genes, body fluids, comparisons, enriched pathways, or PCA availability. Explicitly ask for downloads, CSV, or expression matrices when files are needed.
- Chat searches only the imported Exologue database and links evidence to Search, Browse, and Pathways. Download links appear only for explicit requests.
- Open evidence cards to inspect underlying pages; generated interpretation is a database summary, not clinical guidance.
- Use local Chat sessions to create, switch, clear, or delete browser-only conversations.
Install the Exologue Research skill to query Exologue from compatible external agents.
- Open Download and download the Exologue Research Agent Skill package.
- Run the bundled commands directly; they query https://exologue.net by default.
- Use the skill for gene lookup, profiles, comparison discovery/evidence, pathway search, and matrix discovery.
- Follow returned links to Search, Browse, Pathways, or Download for inspection.
- Use it for research workflows only; it does not provide clinical recommendations.
Look up one protein by gene symbol, UniProt, Ensembl, or Entrez ID.
- Enter a gene symbol such as CD63 or ALB, or another identifier, and press Enter.
- Overview shows the matched gene, approved symbol, and independently detected EV evidence.
- Expression metrics show mean intensity and detection frequency across datasets.
- Significant hits list analyses where the protein was statistically significant.
- Biological context shows the body fluids and diseases where it appears.
Explore full differential expression results for a specific comparison.
- Choose one of four analysis types.
- Use body-fluid, project, and disease/state filters to narrow comparisons.
- Select a comparison and batch-correction method.
- The volcano plot shows all proteins: red is up, blue is down, and grey is not significant.
- The Result Evidence Map connects differential-expression results to enriched pathways; it is not a protein interaction network.
- Protein tables retain exact statistics and enrichment links.
- PCA plots show clustering before and after correction.
- Enrichment charts rank terms by -log10 adjusted p-value while tables retain exact statistics.
Discover biological themes recurring across analyses.
- The table shows GO, KEGG, or WikiPathways terms enriched in multiple comparisons.
- Filter by source, analysis type, or batch-correction method.
- Search by keyword or GO ID.
- Select a row to view disease/body-fluid contexts, recurring genes, and comparisons.
- Select recurring genes to open their Search pages.
Download expression matrices for offline analysis.
- Tables are grouped by body fluid and each row is one disease-context matrix.
- Select CSV to download all proteins and samples.
- Protein and Sample columns show matrix dimensions.
- First columns lists metadata columns before expression values.
View a high-level overview of database contents.
- Metric cards summarize datasets, analyses, proteins, and samples.
- Charts show project source, health status, body fluid, and disease coverage.
- Information icons explain whether views represent sample composition, disease coverage, or dataset origin.
Glossary
Key terms used throughout Exologue.
- Differential expression
- A statistical test identifying proteins with significantly different abundance between groups, reported with log2 fold change and adjusted p-value.
- log2 fold change
- Difference in abundance on a log2 scale: 1 means 2× more abundant and -1 means 2× less abundant.
- Adjusted p-value
- A p-value corrected for testing many proteins; values below 0.05 are commonly considered significant.
- Batch correction
- A statistical procedure removing technical variation between experimental batches. Exologue provides no correction, Limma, and SVA.
- Enrichment analysis
- Tests whether changed proteins are over-represented in known gene sets from GO, KEGG, or WikiPathways.
- Result Evidence Map
- A network summary connecting differential-expression genes, enriched pathways, and evidence links; it is not a physical protein interaction map.
- EV evidence
- Cross-references curated extracellular-vesicle proteomics databases to identify independent detection in EV fractions.
- Extracellular vesicles (EVs) / Exosomes
- Small membrane-bound particles released into body fluids that carry proteins, lipids, and nucleic acids and are studied as biomarkers.
- PCA (Principal Component Analysis)
- A dimensionality-reduction method visualizing sample clustering and batch effects before and after correction.
- Pan-disease markers
- An analysis comparing non-healthy samples with healthy controls within the same body fluid.
- GOBP / GOCC / GOMF
- Gene Ontology subsets: Biological Process, Cellular Component, and Molecular Function.
- KEGG / WikiPathways
- Curated metabolic and signalling pathway databases used in enrichment analysis.
