This organ is surrounded by reticular connective tissue and further divided into red and white pulp.

Identify the lymphoid organ.

This assay tests the ability of Natural Killer cell to lyse target cell.

It pertains to group of tissues or organs where the creation and maturation of lymphocytes take place.

These are stem cells where the cells of the innate immune system originated.

These B cells leave the bone marrow and seed the peripheral lymphoid tissues.

Identify the cells at the center.

It is a cytokine produced by the macrophages which activates NK cells to secrete interferon-gamma (IFNγ) which enhances cytotoxic ability of activated macrophages and differentiation of T cells

Identify the tissue in the box.

This is a lymphoid organ where maturation of T cells takes place

Identify the cell.

These are cells that endocytose, degrade, and display antigen fragments on the cell surface in association with Major Histocompatibility Complex.

Identify the cell at the center of the micrograph

This cell recognizes and destroys virally infected cells via IgG.