Add Figure 1 legend

content/100.figure-table-legends.md

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+## Figure Titles and Legends
+
+![**Figure 1. Overview of ScPCA Portal contents.**](https://github.com/AlexsLemonade/scpca-paper-figures/blob/main/figures/compiled_figures/pngs/figure_1.png){#fig:fig1 width="7in"}
+A. Barplots showing sample counts across four main cancer groupings in the ScPCA Portal, with each bar displaying the number of samples for each cancer type.
+Each bar is shaded based on the number of samples with each disease timing, and total sample counts for each cancer type are shown to the right of each bar.
+B. Barplot showing sample counts across types of modalities present in the ScPCA Portal.
+All samples in the portal are shown under the "All Samples" heading.
+Samples under the "Samples with additional modalities" heading represent a subset of the total samples with the given additional modality.
+Colors shown for each additional modality indicate the suspension type that the single-cell or single-nuclei sample is associated with.
+For example, 75 single-cell samples and 43 single-nuclei samples have accompanying Bulk RNA-seq data.
+C. Example of a project card as displayed on the "Browse" page of the ScPCA Portal.
+This project card is associated with project `SCPCP000009`.
+Project cards include information about the number of samples, technologies and modalities, additional sample metadata information, submitter-provided diagnoses, as well as submitter-provided abstract.
+Where available, submitter-provided citation information as well as other databases where this data has been deposited are also provided.