23104
Accordingly , the alteration in growth was manifested in the presence of 5 and 50 mu g / L of anatoxin - a .
 Chemical: anatoxin - a
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: anatoxin - a