What disease causes tissue damage?

Tissue is a group of similar cells working together to perform a specific function in the body. Think of it as the next level of organization after individual cells—when cells with similar structures and purposes unite, they form tissue. This fundamental biological concept applies to all multicellular organisms, from plants to animals.

In practical terms, tissue represents nature's way of organizing cellular labor. Just as workers in a factory specialize in different tasks, cells group into tissues to efficiently carry out specific jobs. For example, muscle cells combine to form muscle tissue that contracts to create movement, while epithelial cells join to form protective barriers on body surfaces. This organization allows complex organisms to function efficiently, with each tissue type contributing its specialized role to overall health and survival.