8789
Tributyltin and its breakdown products , mono - and di - butyltin , were determined in water birds collected from Lake Huron ( the Great Lakes ) , marine coastal United States , and the west coast of British Columbia , Canada .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None