With advance of molecular biology and cell biology, scholars found that KSC have a few biological characteristics such as slow-cycling in vivo, self-renewable and high proliferating potential.

• 随着分子生物学、细胞生物学等学科的发展，人们发现KSC的生物学特性主要有体内慢周期性、能够自我更新、具有高度增生的潜能。