Exspheres are specialized structures found in certain organisms, particularly in the context of developmental biology. They are often associated with the outer layers of cells and can play a role in protecting the organism or facilitating communication between cells. Exspheres can vary in composition and function depending on the species and the specific biological processes involved. In some cases, exspheres are involved in the formation of protective barriers or in the storage of nutrients. They may also contribute to the overall morphology of an organism, influencing how it interacts with its environment. Understanding exspheres can provide insights into cellular behavior and development in various organisms.