what bacteria is gram variable
Miscellaneous bacterial strains: 1  Gram-variable-staining rod, facultative anaerobic bacteria (actually has a Gram-positive cell wall, but because the cell wall is so thin it can appear either Gram-positive or Gram-negative under the microscope).  Small (1-1.5 Âµm diameter) non-spore forming, non-motile coccobacilli.