| Technique | BENZIDINE ,(/,)/,( | 
| Principle | Benzidine is used to detect the presence of oxidases and peroxidases and is important in the differentiation of some streptococci | 
| Cautions | Benzidine is toxic and should not be used regularly | 
| Method | |
| Results | |
| Positive control | |
| Negative control | |
| Reagents | |
| Reference |