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.
1 Much of the histamine in the body is produced by the granules in mast cells and basophils as part of a local immune response to the presence of invading bodies. Histamine is also made in the brain where it acts as a neurotransmitter or chemical messenger that carries signals between nerves. 2  Another important site where histamine is stored and released is in the enterochromaffin-like (ECL) cells of the stomach.