Asthma is a disease characterized by hyper-reactivity of the airways and the trachea and bronchi to various stimuli. In plain English, this means that because of this hyper-reactivity or highly sensitized state, a simple irritant such as smoke or other allergen such as dust can provoke a bona fide asthma attack. I would like to [...]

The organs involved with the immune system are called the lymphoid organs, which affect growth, development, and the release of lymphocytes (a certain type of white blood cell). The blood vessels and lymphatic vessels are important parts of the lymphoid organs, because they carry the lymphocytes to and from different areas in the body. Each [...]