Final answer:
The eosinophil is the type of cell commonly elevated in asthma, contributing to inflammation and allergic responses characteristic of the condition.
Step-by-step explanation:
The cell type that is commonly elevated in asthma is the eosinophil. Asthma is characterized by symptoms such as inflammation, edema of the airway, and bronchospasms. Excessive mucus secretion can further obstruct the airways. During asthma attacks, it is observed that there are infiltrates of eosinophils in the walls of the bronchi and bronchioles. Eosinophils are a type of white blood cell and part of the immune system that contribute to the inflammation and allergic responses often seen in asthma sufferers.
Additionally, CD4 TH2-mediated reactions are known to result in chronic asthma where eosinophils are recruited and activated, leading to the release of cytokines and inflammatory mediators, which exacerbate the symptoms of asthma.