Seldom found circulating in the blood
T Cell
Circulate in the body fluids (blood)
B Cell
Handles most of the infectious organisms
B Cell
Responsible for delayed hypersensitivity
T Cell
Serve as the sentinels of immune surveillance against cancer and mediators of graft rejection
T Cell
serve as the immune system’s memory, providing faster response to any exposure to the same antigen
B memory cells
grow larger, stop reproduction and continuously secrete large quantities of antibody.
Plasma cells:
Cytotoxic, attack cell membranes bearing their specific antigen
TC cells
Delayed hypersensitivity cells (lymphokines)
TD cells
Helper cells; stimulate B cells and other T cells specific for that antigen (proliferation and differentiation)
TH cells
Suppressor cells; opposite effect of helper cells
TS cells
Cell mediated immunity
TC cells , TD cells
Immunoregulatory role
TH cells TS cells
All biologics have an
expiration date.
Diphtheria antitoxin:()-year exp date provided the preparation has a () excess of potency
5, 20%
Refrigerated:
: 2-8°C
Yellow fever vaccine
0-5 °C
Live poliomyelitis vaccine:
below -10 °C
Train the immune system to create antibodies
VACCINES
Contain killed or weakened forms of viruses or bacteria ▪ Recognizes the invading virus or bacteria
VACCINES