«Costochondritis is a condition that causes chest pain due to inflammation of the cartilage and bones in the chest wall. Also called Tietze's Syndrome, costochondritis occurs when there is inflammation at the junction of the rib bone and breastbone (sternum). At this junction, there is cartilage joining these bones. This cartilage can become irritated and inflamed. Depending on the extent of the inflammation, costochondritis can be quite painful.»

«The same signal responsible for promoting the type of immune responses that cause asthma and allergy can also limit the type of inflammation associated with debilitating diseases like inflammatory bowel disease, arthritis and multiple sclerosis, according to researchers from the University of Pennsylvania School of Veterinary Medicine. The researchers discovered how IL-25, a signaling protein known as a cytokine, both prevents destructive inflammation and promotes immune responses associated with asthma and allergic responses. »

[A course note by a Dr. Kirby at the Ontario Veterinary College]