title: Observations on the ultrastructure, mode of infectivity and host range of xenosomes.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000254:growth & development / Q000648:ultrastructure*; D002462:Cell Membrane / Q000648:ultrastructure; D016798:Ciliophora / Q000382:microbiology*; D004247:DNA; D005407:Flagella / Q000648:ultrastructure; D013045:Species Specificity; D013559:Symbiosis
chemical_list: D004247:DNA