Thymus

Thymus is an encapsulated, bilobed gland located in the anterosuperior mediastinum that sits on the heart. Derived from the third pharyngeal pouch ectoderm, the thymus consists of a dense cortex and pale medulla. The cortex contains immature T cells, while the inner...

Lymph Nodes

Lymph Nodes We have hundreds of lymph nodes in our body. These bean-shaped structures are secondary lymphoid organs. Remember that bone marrow and thymus are the primary lymphoid organs. Important Functions A lymph node is a cluster of various kinds of cells. These...

Immunity and Immune System

IMMUNITY Immunity is the capability of our body to defend against the microorganisms including bacteria, viruses, fungi, and parasites. IMMUNE SYSTEM All cells, chemicals, and tissues acting together to offer immunity make up the immune system. Examples of the cells...

Introduction to Immunology (Part 1)

Accompanying video lecture on Drbeen.com: https://members.drbeen.com/view/overview-innate-and-acquired-arm-1/rkhSjfCd2lW Our immune system is a major organ system in our body that helps defend against the microorganisms trying to invade us. A majority of the patients...
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