Can someone help me to find the logic why in NCBI mesh page for subheading are not similar in the downloadable XML in desc2022.xml Example: Mesh (HEART) https://www.ncbi.nlm.nih.gov/mesh/68006321 / https://meshb.nlm.nih.gov/record/ui?ui=D006321 Mesh (FUNGI) https://www.ncbi.nlm.nih.gov/mesh/68005658 here have 43 subheadings while the qualifiers same in XML https://meshb.nlm.nih.gov/record/ui?ui=D005658 only 15 item