<qa>  What is the name of the type of immune cell called?Eosinophilic esophagitis EoE is a newly recognized chronic disease that is increasingly being diagnosed in children and adults. Many patients with EoE also have food allergies. EoE is characterized by inflammation and accumulation of a specific type of immune cell, called an eosinophil, in the esophagus. While there have been several large studies of EoE, very few have focused on the roles the immune system, geneticsheredity, and the environment in EoE. 