The process whose specific outcome is the progression of a pacemaker cell over time, from its formation to the mature state. Pacemaker cells are specialized cardiomyocytes that are responsible for regulating the timing of heart contractions. [GOC:mtg_cardiac_conduct_nov11, GOC:mtg_heart]
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Collection
M5: Ontology GO: Gene Ontology GO:BP: GO Biological Process
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