During embryonic development, cells

differentiate and specialize into different types of cells that make up various tissues and organs in the body. This process of differentiation is crucial for the formation and functioning of the body's complex systems. Cells receive signals from their environment that trigger specific pathways of gene expression and protein production, leading to their individual characteristics and functions. This process is tightly regulated and ensures that each cell type performs its specific role in maintaining the overall health and function of the organism.