the organisms now known to form r bodies include the cytoplasmic kappa endosymbionts of p. biaurelia and p. tetraurelia , the macronuclear kappa endosymbionts of p. caudatum , pseudomonas avenae ( a free-living plant pathogen ) , pseudomonas taeniospiralis ( a hydrogen-oxidizing soil microorganism ) , rhodospirillum centenum ( a photosynthetic bacterium ) , and a soil bacterium , eps-5028 , which is probably a pseudomonad .
C0029235
organisms
C0445623
microorganism