| "candidatus paraholospora nucleivisitans", an intracellular bacterium in paramecium sexaurelia shuttles between the cytoplasm and the nucleus of its host. | an intracellular bacterium was discovered in two isolates of paramecium sexaurelia from an aquarium with tropical fish in münster (germany) and from a pond in the wilhelma zoological-botanical garden, stuttgart (germany). the bacteria were regularly observed in the cytoplasm of the host, but on some occasions they were found in the macronucleus of the host cell. in these cases, only a few, if any, bacteria were observed remaining in the cytoplasm. the bacterium was not infectious to p. sexaureli ... | 2009 | 19679418 |