7455
We observe a distinct " plateau - like region " in the shear thinning viscosity curve , under an external magnetic field , possibly due to a peculiar alignment of the chains with respect to the field direction where the structure is stable against fragmentation .
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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:
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