10780
While the Gram positive L . lactis was shown to grow slowly on both films , independently of their rigidity , the Gram negative E . coli exhibited a more rapid growth on non - cross - linked softer films compared to the stiffer ones .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None