Enter your MEDLINE search above, and MeSH Subheading Graph will show how the concepts in your results stack up against the 23 top-level subheadings in the MeSH qualifier hierarchy. For each search you'll see two graphs — one showing percentages compared to those for all of MEDLINE and another showing relative proportions. Once you have completed at least two searches, you can compare the proportions of one search against another. (more)