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| 1 | +# Imputed MERFISH spatial transcriptomics of a single adult mouse brain |
| 2 | + |
| 3 | +The MERFISH spatial transcriptomics dataset ([MERFISH-C57BL6J-638850](MERFISH-C57BL6J-638850.md)) was mapped |
| 4 | +to the whole mouse brain taxonomy ([WMB-taxonomy](WMB-taxonomy.md)) using a [hierarchical |
| 5 | +correlation method](https://github.com/AllenInstitute/scrattch.mapping). To further integrate the transcriptomics and spatial |
| 6 | +profiles of each cell type, 10Xv3 expression was projected or imputed into the |
| 7 | +MERFISH space. The basic idea is to compute the k-nearest neighbors (KNNs) |
| 8 | +among the 10Xv3 cells for each MERFISH cell and use the average expression of |
| 9 | +these neighbors for each gene as the imputed values. Imputed expression values |
| 10 | +were generated for 8,460 marker genes. Further details can be found in the |
| 11 | +methods section of [Yao et. al](https://www.nature.com/articles/s41586-023-06812-z). |
| 12 | + |
| 13 | +| Component | Current Version | Size | |
| 14 | +|---|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------| |
| 15 | +| Expression Matrices | [s3://allen-brain-cell-atlas/expression_matrices/MERFISH-C57BL6J-638850-imputed/20240831](https://allen-brain-cell-atlas.s3.us-west-2.amazonaws.com/index.html#expression_matrices/MERFISH-C57BL6J-638850-imputed/20240831/) | 47 GB | |
| 16 | +| Metadata | [s3://allen-brain-cell-atlas/metadata/MERFISH-C57BL6J-638850-imputed/20240831](https://allen-brain-cell-atlas.s3.us-west-2.amazonaws.com/index.html#metadata/MERFISH-C57BL6J-638850-imputed/20240831/) | 1 MB | |
| 17 | + |
| 18 | +Data is being share under the CC BY NC 4.0 license. |
| 19 | + |
| 20 | +Related resources : |
| 21 | +* Whole mouse brain clustering ([WMB-10X](WMB-10X.md)) |
| 22 | +* Whole mouse brain mouse taxonomy of cell types ([WMB-taxonomy](WMB-taxonomy.md)) |
| 23 | +* Whole mouse brain MERFISH spatial transcriptomics dataset ([MERFISH-C57BL6J-638850](MERFISH-C57BL6J-638850.md)) |
| 24 | + |
| 25 | +Associated notebooks: |
| 26 | +* [**Getting started**](../notebooks/getting_started.ipynb): learn how to use the AbcProjectCache to |
| 27 | + facilitate data download and usage. |
| 28 | +* [**10x scRNA-seq clustering analysis and annotation**](../notebooks/cluster_annotation_tutorial.ipynb): learn about the |
| 29 | + whole mouse brain taxonomy through some example use cases and visualization. |
| 30 | +* **MERFISH whole brain spatial transcriptomics** |
| 31 | + * [**Part 1**](../notebooks/merfish_tutorial_part_1.ipynb): Learn about the MERFISH dataset through some example use |
| 32 | + cases and visualization for a single brain section. |
| 33 | + * [**Part 2a**](../notebooks/merfish_tutorial_part_2a.ipynb): Learn to access data and prepare for whole brain. |
| 34 | + example use cases in part 2b. |
| 35 | + * [**Part 2b**](../notebooks/merfish_tutorial_part_2b.ipynb): Explore the whole brain data through visualization and |
| 36 | + analyses of a set of genes of interest. |
| 37 | + * [**MERFISH imputed genes**](../notebooks/merfish_imputed_genes_example.ipynb): |
| 38 | + Learn about the using the imputed genes of the MERFISH dataset. |
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