27709
The average ratio of apical - to - transcriptional BMD values was less than two suggesting that for the current chemicals , transcriptional perturbation did not occur at significantly lower doses than apical responses .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None