Allen Brain Atlas

Allen Brain Atlas provides a repository of spatial gene expression data and reference atlases across mouse, human, and non-human primate brains to support neuroanatomical and genomic analyses.

Key Features:

• Gene Expression ISH Data: High-resolution in situ hybridization (ISH) images for over 10,000 genes capturing spatial distribution of gene expression.
• Colorimetric and Fluorescent ISH Images: Availability of colorimetric and fluorescent ISH image datasets that represent differing signal modalities.
• Reference Atlases: Sagittal and coronal reference atlases for anatomical orientation and comparative studies.
• Gene Expression Masks: Quantitative masks that capture intensity of gene expression or signal across brain regions.
• Search Capabilities: Query functionality to retrieve gene expression by specific anatomic regions, including cross-dataset searches.
• Data Integration: Integration of ISH with microarray, RNA sequencing, connectivity data, and MRI-derived neuroanatomical information.
• Visualization Tools: Brain Explorer software enabling 3D navigation of brain anatomy and gene expression patterns.
• Interactive Reference Atlas Viewer: Interactive viewer for exploration of reference atlases and spatial neuroanatomical data.

Scientific Applications:

• Neuroanatomical Gene Expression Mapping: Exploration of spatial gene expression patterns in relation to brain anatomy.
• Gene–Function and Disease Associations: Identification of genes associated with specific neurological functions or disorders.
• Developmental Expression Studies: Analysis of developmental changes in gene expression across brain regions.
• Comparative Neurobiology: Study of species-specific differences in brain organization among mouse, human, and non-human primates.

Methodology:

Data collection uses standardized high-resolution in situ hybridization (ISH) and advanced imaging technologies, with integration across ISH, microarray, RNA sequencing, connectivity, and MRI-derived neuroanatomical datasets.