11938
Tests of microbicidal efficacy in which the same 0 . 05 % PHMB o / w emulsion was re - used 8 times revealed a drug delivery system activated by the presence of test bacteria .
 Chemical: PHMB
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: PHMB 
Answer:
 Chemical: PHMB