Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Cell fusion
Medically reviewed by Min Clinic Staff | Updated: January 2026
Cell fusion: The melding of two or more cells into one cell called a heterokaryon. A heterokaryon may reproduce itself for at least several generations. Cell fusion provides a method for assigning specific genes to specific chromosomes.
When an undifferentiated stem cell fuses with a mature differentiated cell, the resultant cell can retain the mature cell phenotype.