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The pigment left over from the breakdown and digestion of damaged blood cells is called lipofuscin. It can be found in the heart and in smooth muscle.

Review Date 1/16/2021

Updated by: Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.