Vacuum phenomenon (in the nucleus pulposis of the intervertebral disc below the retrolisthesis), This is a sign of tearing of the disc cartilage. Reduction of disc height with corresponding loss of the disc space, Marginal sclerosis (more dense due to more mechanical stress) of the adjacent vertebral bodies,
T cells, which secrete antibodies. c. macrophages, which produce histamines. d. B cells, which react with antigen-MHC complexes. e. T cells, which react with antigen-MHC complexes. ____ 114. You had a cold last month and you caught another one this month from your daughter.
As previously mentioned, histamine is a chemical stored within our body. It is produced by cells known as mast cells. Histamine is a protein molecule with the chemical formula C5H9N3. It serves as an important part of our body's immune response.When we come into contact with an allergen, such as pollen or animal dander, histamine is released by the body to the site of contact.hen the histamine arrives at the site of irritation, it causes several important effects. One is the dilating, or widening, of small blood vessels in that area. This is known as an inflammatory response, or swelling. Swelling increases the flow of blood to the area.