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.
Histamine is also the irritating ingredient present in the venom of many species of wasps and bees. In humans histamine is found in nearly all tissues of the body, where it is stored primarily in the granules of tissue mast cells. The blood cells called basophils also harbour histamine-containing granules.