ArrayExpress

ArrayExpress accesses the ArrayExpress Collection at EMBL-EBI Biostudies and builds Bioconductor data structures including ExpressionSet, AffyBatch, and NChannelSet.

Key Features:

• ArrayExpress Repository Access: Connects to the ArrayExpress Collection housed at EMBL-EBI Biostudies database.
• Bioconductor Data Structure Construction: Generates standard Bioconductor data objects ExpressionSet, AffyBatch, and NChannelSet from retrieved data.

Scientific Applications:

• Microarray Data Import: Facilitates retrieval and structured import of microarray experiments from the ArrayExpress repository into the Bioconductor analysis environment.
• Multi-platform Expression Analysis: Supports diverse microarray data types through generation of platform-specific Bioconductor objects including ExpressionSet for generic expression data, AffyBatch for Affymetrix data, and NChannelSet for multi-channel array data.

Methodology:

Queries the ArrayExpress Collection at EMBL-EBI Biostudies and constructs Bioconductor data structures from retrieved data.