The first line of cellular defense against pathogens are the
A) T lymphocytes.
B) B lymphocytes.
C) NK cells.
D) phagocytes.
E) plasma cells.

Question

Quizplus · Accepted Answer

The first line of cellular defense against pathogens are phagocytes, which includes macrophages and neutrophils. They engulf and digest pathogens, helping to prevent infection. T and B lymphocytes are part of the adaptive immune response and are activated after exposure to a specific pathogen. NK cells are part of the innate immune response and are important in detecting and killing virus-infected cells and cancer cells. Plasma cells are a product of B lymphocytes and produce large amounts of antibodies against a specific pathogen.

The First Line of Cellular Defense Against Pathogens Are the