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when a person is born when a person becomes old when a person gets sick when a person dies
are still functional are replaced each year are lost each year are damaged each year
s high enough to replace cells faster than they’re dying off is of any use to researchers is the same as that in healthy hearts changes over time
the death of heart cells the life span of a person the effects of pharmaceuticals the weight of the patient
when a person becomes old. as soon as a person gets sick. immediately after a person is born. once a person dies.
the analysis of cardiac cells the prevention of chronic diseases the treatment of heart disease the study of longstanding mysteries
changes over time can be monitored is the same as that in healthy hearts is high enough to replace cells faster than they’re dying off
the study of longstanding mysteries the analysis of cardiac cells the prevention of chronic diseases the treatment of heart disease
the dying heart cells the effect of pharmceutical the weight of a patient the life span of a person
the death of heart cells the life span of a person the effects of pharmaceuticals the weight of the patient
when a person is born when a person becomes old when a person gets sick when a person dies
when a person becomes old as soon as a person gets sick immediately after a person is born once a person dies