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                                                Cholesterol crystal - SEM
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                                                SEM of sharp cholesterol crystal formed by surrounding cultured macrophage foam cells. 
  
Credit: Patricia Yancey, Tonya Walser, Ginny Kellner-Weibel, George Rothblat, Jay Jerome. 
 
Copyright © 2001 Vanderbilt University. Reprinted with permission. 
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