5252
Exposure effects were scored by morphometric ( developmental stage , wet weight , and body , snout - vent and hindlimb lengths ) and molecular ( mRNA abundance using quantitative real time polymerase chain reaction ) criteria .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None