23096
Phytotoxic effects of the cyanobacterial neurotoxin anatoxin - a : Morphological , physiological and biochemical responses in aquatic macrophyte , Ceratophyllum demersum .
 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