Definition and Origin of Embryonic Stem Cells Embryonic Stem Cells (ESCs) represent a unique population of undifferentiated biological cells derived from the inner cell mass (ICM) of a mammalian embryo at the blastocyst stage. This critical stage of development typically occurs approximately four to five days after fertilization in humans. The fundamental characteristic that defines […]
Defining the Undifferentiated Cell and Core Characteristics Stem cells represent a fundamental concept in biological science, defined primarily as undifferentiated cells that possess the remarkable capability to divide and produce more specialized cell types, while simultaneously retaining their own undifferentiated state through a process known as self-renewal. This dual capacity—self-renewal and differentiation—is what fundamentally distinguishes […]