The repressor is essentially a negative control mechanism.
Compared with negative control group, the doubling time of both positive control group and experimental groups was prolonged.
From 31 days all rats were sensitized and chanllenged to induce asthma with OVA but in negative control group using N.
Methods 78 cases suffering from acute and chronic viral hepatitis were treated with Xiongdan Jiaonang; 23 cases of hepatitis as negative control, were treated with Fufang Yiganling.
On the negative control sections, almost all cells were semitransparent, and without coloration , and the background of slices almost had no color.
