Research Article
Distribution Analysis of Salvianolic Acids in Myocardial Ischemic Pig Tissues by Automated Liquid Extraction Surface Analysis Coupled with Tandem Mass Spectrometry
Figure 4
Comparison of the signal intensities for the four compounds under different storage conditions. Normal: normal experimental conditions; Repeat: after repeated rewarming for three times; Long-term: after long-term stored in a −80°C freezer; Short-term: after short-term placement at room temperature. vs. normal experimental conditions.