Question

Which type of cells are primarily responsible for cellular defence in innate immunity?

Options

• Phagocytic cells such as neutrophils, monocytes, and macrophages

• Plasma cells that produce antibodies

• B-lymphocytes that mediate adaptive immunity

• T-lymphocytes that recognize antigens

Answer 1

Cellular defence is carried out mainly by phagocytic cells including polymorphonuclear leukocytes (neutrophils), monocytes, and macrophages. These cells actively ingest and destroy foreign particles and microorganisms through the process of phagocytosis.