The three lines of defense your body has against disease include all except
(1 point)
• physical and chemical defenses.
• inflammation
• immune system.
• scarring.
scarring.
True or False:
B cells and H cells are two important cells in the immune system that help fight infection.
(1 point)
• true
• false
False
Antibodies are produced by (1 point)
• B cells.
• T cells.
• red blood cells.
• lymph nodes.