505 CMR, § 3.02
Biological Material: a specimen containing tissue, either in fluid or non-fluid form, extracted from a body in the possession of the Office. Biological material includes, but is not limited to, blood and tissue.
Blood: the fluid tissue circulating through the heart, arteries, capillaries, and veins, carrying nutriment and oxygen to body cells. A blood sample may consist of the liquid portion, the cellular elements, or both.
Extract: to remove from the body.
Fluid: any liquid of the body.
Office: the Office of the Chief Medical Examiner.
Sample: a representative portion of an organ or body part.
Tissue: a group of similarly specialized cells, in fluid or non-fluid form, including but not limited to whole organs and representative samples thereof stored as small samples within a stock bottle containing formalin.
505 CMR, § 3.02