23105
The results clearly indicate that anatoxin - a can disrupt homeostasis of C . demersum through induction of oxidative stress ; furthermore this aquatic plant possesses effective defense mechanisms to cope with low concentrations of anatoxin - a .
 Chemical: 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; Chemical: anatoxin - a