{"version":"1.0","type":"rich","title":"Collapsible Tree Hierarchy - Real Data ","description":"This interactive tree visualization displays the hierarchical structure of MeSH (Medical Subject Headings) data, with nodes representing terms and branches showing parent-child relationships. Users can click nodes to collapse or expand subtrees and navigate through the hierarchy. Built with React and d3.v6, the visualization uses SVG rendering with smooth 250ms transitions, `root.descendants()`, and `tree(root)` for layout computation. Node circles scale based on child count, and click events trigger nested navigation through a node stack while a tooltip shows the selected term's name and key.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3536bf7af83649d7b61693f18873221b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}