Our bodies are made up of countless cells, and each one is enclosed by a thin layer called the cell membrane. The cell membrane is not only soft but also possesses a property called fluidity, allowing it to flow like the surface of the sea. This fluidity, quantified as membrane viscosity, plays a crucial role in membrane transport and cellular functions. "This increased viscosity arises from complex structures unique to living cells, such as the cytoskeleton and membrane proteins, which hinder membrane flow." The next goal of the team is to compare the membrane viscosity of fertilized and unfertilized eggs.