New observations on the ciliate genus Vestibulongum (Pycnotrichidae): vestibular ultrastructure, macronuclear endosymbiotic bacteria, biogeography, and evidence for host specificity.

New observations on the ciliate genus Vestibulongum (Pycnotrichidae): vestibular ultrastructure, macronuclear endosymbiotic bacteria, biogeography, and evidence for host specificity.