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In what ways do the language skills of three-year-old's and five-year-olds differ?
Helper T-Cells
A type of white blood cell crucial for the immune system's response, supporting the activity of other immune cells in combating pathogens.
Natural Killer T-Cells
A type of immune cell that plays a role in the body's innate immune response by recognizing and directly killing certain types of tumor and virally infected cells.
B-Cells
A type of white blood cell important in the immune response by producing antibodies to fight off infections.
Antibodies
Y-shaped proteins in the immune system that detect and help neutralize foreign objects like bacteria and viruses.
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