13695
The erythrocyte membrane , a metabolically regulated active structure that comprises lipid molecules , junctional complexes , and the spectrin network , enables the cell to undergo large passive deformations when passing through the microvascular system .
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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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