"Alphaproteobacteria" 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.
MeSH information
A class in the phylum PROTEOBACTERIA comprised mostly of two major phenotypes: purple non-sulfur bacteria and aerobic bacteriochlorophyll-containing bacteria.

This graph shows the total number of publications written about "Alphaproteobacteria" by people in this website by year, and whether "Alphaproteobacteria" was a major or minor topic of these publications.
Bar chart showing 378 publications over 22 distinct years, with a maximum of 33 publications in 2014
To see the data from this visualization as text, click here.