"Porphyrins" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
A group of compounds containing the porphin structure, four pyrrole rings connected by methine bridges in a cyclic configuration to which a variety of side chains are attached. The nature of the side chain is indicated by a prefix, as uroporphyrin, hematoporphyrin, etc. The porphyrins, in combination with iron, form the heme component in biologically significant compounds such as hemoglobin and myoglobin.
Below are MeSH descriptors whose meaning is more general than "Porphyrins".
Below are MeSH descriptors whose meaning is more specific than "Porphyrins".
This graph shows the total number of publications written about "Porphyrins" by people in this website by year, and whether "Porphyrins" was a major or minor topic of these publications.
To see the data from this visualization as text, click here.