24562
Culture supernatants of Porphyromonas gingivalis ( P . g . ) , a bacterium that secretes proteases responsible for periodontitis , cleaved the MUC2 - C terminal region , whereas the N - terminal region was unaffected .
 Chemical: N
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: N 
Answer:
 Chemical: N