Negative Control is a specimen that gives no reaction under the conditions of the test.
阴性对照是指在试验条件下无任何反应的试样。
2
Comprehensive sampling instead of several small control samples: 100% of the specimen compacted.
以全面采样取代了几处小面积的对照取样：压实采样精确度可达100%。
3
ResultThe ADA and ALT measurement results express that serum ADA and ALT in 77 patients were evidently higher than those in the control group, but not obviously in the jaundice specimen.