| Microorganism | MIC50 (μg/ml)
 | MIC90 (μg/ml)
 | Range (μg/ml)
 | Antimicrobial | Reference | 
            
			        
			            | Staphylococcus aureus (ATCC 25923) | - | - | 0.125 - ? | Tetracycline (Sumycin, Achromycin V, Steclin) | 650 | 
                
			        
			            | Staphylococcus aureus (ATCC 25923) | - | - | 0.13 - ? | Tetracycline (Sumycin, Achromycin V, Steclin) | 621 | 
                
			        
			            | Staphylococcus aureus (ATCC 25923) | - | - | 0.16 - ? | Tetracycline (Sumycin, Achromycin V, Steclin) | 68 | 
                
			        
			            | Staphylococcus aureus (ATCC 25923) | - | - | 0.47 - ? | Tetracycline (Sumycin, Achromycin V, Steclin) | 1482 | 
                
			        
			            | Staphylococcus aureus (ATCC 25923) | - | - | 0.5 - ? | Tetracycline (Sumycin, Achromycin V, Steclin) | 1423 |