Task: Text Categorization
Input (English): Question: Interactions between selectins and vascular targeins: 
 Options:  <0> They are very strong. <1> They mediate the first phase of the leukocyte / endothelium adhesion. <2> They are permanent. <3> They mediate firm adhesion to the endothelium. <4> They are very intense in the spleen.
Output (English): biology