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.
Stimulates basophils to secrete chemicals. Basophils-secrete chemicals such as leukotrienes (activates and attracts neutrophils and eosinophils), histamine (increases blood flow and speeds the delivery of leukocytes), and heparin (inhibits formation of blood clots that would hinder leukocyte mobility.