1846
One of these spots was shown to contain residual unmodified portions of two major heat - modifiable proteins which failed to shift to their heat - modified positions on gels , despite solubilization at 100 degrees C for 10 min before electrophoresis .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
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