Protist Image Data (PID) is an online database that provides pictures and short descriptions of selected Protist genera, especially those genera whose species are frequently used as experimental organisms or are important in studies of organismal evolution. Up-to-date information is provided on the morphology, taxonomy and phylogenetic relationships of these organisms. Information on PID pages is arranged by the following: Introduction, Appearance, Ultrastructure, Reproduction and Life History, Similar Genera, Classification, Taxonomy and Nomenclature, Cultures, Selected References, and Internet Resources.
