A structure detached from surrounding tissues or characterized by difference in structure.

SEE: islet.

blood i.The early collections of cells in the embryo that give rise to blood and blood-forming organs later in life.

i.'s of Calleja

SEE: under Calleja y Sánchez, Julián.

i.'s of Langerhans Islets of Langerhans.

SEE: under Langerhans, Paul.

pancreatic i.'sIslets of Langerhans.

SEE: under Langerhans, Paul.

i. of Reil

Variant: Reil island