|
|
 |
 |
|
 |
|
Medium-sized grey colonies. The colonies have a characteristic odour.
|
|
|
The same Blood Agar plate examined with transmitted light. There is a zone of beta-haemolysis around the colonies.
The picture below is of another E. coli where there is no haemolytic zone around the colonies.
Click on the picture to see an enlarged version. |
|
|
|
|
|
| General characteristics: Gram-negative rods. Catalase-positive and oxidase-negative. Attacks sugars by fermentation and gas is produced. Motile. Mesophilic. |
|
|
|
|
|
|
|
|
