11896
Excepting for certain low molecular mass bands corresponding to disintegrins , and some PLA ( 2 ) s and PI - metalloproteinases , Western blotting and immunoaffinity chromatography revealed immunorecognition of most Porthidium and Cerrophidion venom proteins .
 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