Specialized cells are unique types of cells that perform specific functions in an organism. Each type of specialized cell has a distinct structure that enables it to carry out its role effectively. For example, red blood cells transport oxygen throughout the body, while neurons transmit signals in the nervous system. These cells are essential for the overall functioning of multicellular organisms. They work together in tissues and organs to maintain homeostasis and support life. Specialized cells arise from stem cells, which can differentiate into various cell types depending on the needs of the organism.