PR for data loading in various chapters #452

Job	Run time
Build-environments (jupyter-book/introduction/analysis_tools.yml)	1m 24s
Build-environments (jupyter-book/preprocessing_visualization/preprocessing.yml)	2m 29s
Build-environments (jupyter-book/cellular_structure/clustering.yml)	1m 40s
Build-environments (jupyter-book/cellular_structure/annotation.yml)	4m 49s
Build-environments (jupyter-book/cellular_structure/integration.yml)	3m 37s
Build-environments (jupyter-book/conditions/compositional.yml)	4m 51s
Build-environments (jupyter-book/conditions/gsea_pathway.yml)	2m 7s
Build-environments (jupyter-book/conditions/perturbation_modeling.yml)	4m 3s
Build-environments (jupyter-book/conditions/differential_gene_expression.yml)	5m 56s
Build-environments (jupyter-book/trajectories/lineage_tracing.yml)	3m 3s
Build-environments (jupyter-book/trajectories/pseudotemporal.yml)	1m 28s
Build-environments (jupyter-book/mechanisms/cell_cell_communication.yml)	2m 47s
Build-environments (jupyter-book/spatial/spatial.yml)	4m 18s
Build-environments (jupyter-book/surface_protein/surface_protein.yml)	1m 26s
Build-environments (jupyter-book/multimodal_integration/paired_integration.yml)	4m 54s
Build-environments (jupyter-book/multimodal_integration/advanced_integration.yml)	5m 19s
	54m 11s

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