How a Human Embryo Develops into a Fetus | Britannica

Future Biotechnology on Instagram: "When a sperm successfully fertilizes an egg, a rapid release of zinc ions occurs from the surface of the oocyte. This event is known as the zinc spark. It was first observed in mammalian eggs using advanced imaging techniques, where the zinc ions produce a burst of fluorescence that looks like a spark of light. These sparks are not just visually striking—they are biologically significant. The release of zinc plays a critical role in oocyte activation, a proces

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Early Embryonic Development | Stages & Significance

Embryonic Stage | Definition & Development