Blood and Lymphoid Tissue

Each morphological abnormality points to a specific diagnosis

A memory aid for the diagnostic features on a blood film.

Red marrow is haematopoietic; yellow marrow is fat

A memory aid for marrow structure and the sites of blood formation.

Biconcave anucleate discs with central pallor, and anucleate platelet fragments

A memory aid for the normal appearance of red cells and platelets.

Peyer's patches, M cells, lamina propria lymphocytes and secretory IgA

A memory aid for the immune apparatus of the gut.

Cortex with follicles, paracortex with T cells, and medulla with plasma cells

A memory aid for the histological zones of a lymph node.

Anucleate fragments with alpha and dense granules

A memory aid for platelet structure and the contents of its granules.

White pulp is lymphoid; red pulp filters blood

A memory aid for the red and white pulp of the spleen.

Cortex of dense thymocytes, medulla with Hassall corpuscles

A memory aid for the structure and function of the thymus.

Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils

A mnemonic for the white cell types in order of abundance.