The exact role of a tissue in an organism depends on what types of cells it contains. For example, the endothelial tissue that lines the human gastrointestinal tract consists of several cell types.

Nucleic acid extraction from biological samples is inherently difficult to execute consistently across different tissue types ...

It produces most of the body's essential blood cells, including: There are two main types of bone marrow, and they each ...

The hymen is a thin piece of tissue located at the opening of the ... There are two main types of hymens: Annular. These hymens form a ring around the entire vaginal opening.