Inside History on Instagram: "This video highlights the remarkable early stages of human development, beginning with a single fertilized cell and ending with the first hints of organ formation. The animation follows that one cell as it rapidly divides, becomes a blastocyst, and implants itself in the uterus. From there, it guides you through major milestones like gastrulation, the formation of germ layers, the emergence of specialized cells, and the initial outlines of essential body structures!