What is the relationship between PLoS and PubMed Central?
PubMed Central is an archive created by the National Center for Biotechnology Information of the National Library of Medicine; it is not itself a publisher. It provides a single free repository for the published literature, and several journals—such as the Molecular Biology of the Cell and the Proceedings of the National Academy of Sciences USA—deposit content at PubMed Central and allow free access a few months after articles have been published. PLoS journals will be deposited in PubMed Central immediately upon publication.