| Gram Stain | |
 Small rods | |
| Growth on blood agar | |
| |
| Small pale colonies with beta hemolysis | |
| Catalase Test | |
| |
| Negative | |
| Listeria monocytogenes | |
| Can grow at 25 C and even at 4 C. | |
| Gram Stain | |
Small rods | |
| Growth on blood agar | |
|
| |
| Small pale colonies with beta hemolysis | |
| Catalase Test | |
|
| |
| Negative | |
| Listeria monocytogenes | |
| Can grow at 25 C and even at 4 C. | |