25051
Among these virulence factors is the cysteine peptidase gingipain B ( RgpB ) , which is the major virulence factor secreted by the periodontopathogen Porphyromonas gingivalis that attacks host vasculature and defense proteins .
 Chemical: cysteine
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: cysteine 
Answer:
 Chemical: cysteine