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Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA 71130, USA
Received 13 July 2001; received in revised form 9 July 2002; accepted 14 July 2002.
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☆ Editor: T.R. Jerrells
PII: S0741-8329(02)00277-X
© 2002 Elsevier Science Inc. All rights reserved.
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