172
The mean +/- SD of cadmium concentrations in shrimp samples were 0 . 128 +/- 0 . 144 ( mu g / g ) .
 Chemical: cadmium
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: cadmium