| 释义 |
Todd unit Todd u·nitthe unit in which the results of testing for antistreptolysin O (ASO) are expressed. It denotes the reciprocal of the highest dilution of test serum at which there continues to be neutralization of a standard preparation of the streptococcal enzyme streptolysin O.Todd unit (tŏd) In a test of inhibition hemolysis by enzymes such as antistreptolysin O, the reciprocal of the highest dilution that inhibits hemolysis. |