Tag: blastocyst

November 21, 2025 / Mohammed looti

EMBRYONIC STEM CELL

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 […]

October 9, 2025 / Mohammed looti

MORULA

The Morula Stage in Early Human Embryogenesis The Core Definition and Structure The Morula is a vital, transient stage in the process of early embryonic development, occurring shortly after the successful fertilization of the ovum. Defined structurally, the morula is a solid ball of cells, typically comprising between 16 and 32 blastomeres, which resembles a […]