Question

Which of the following does not include in cellular barriers of innate immunity?
(a) PMN – Neutrophils
(b) N K Cells
(c) Macrophages
(d) B – lymphocytes

Answer 1

Question -

Which of the following does not include in cellular barriers of innate immunity?

Answer -

Option A is Correct Answer ✔️✔️

PMN – Neutrophils

Answer 2

B – lymphocytes are not included in cellular barriers of innate immunity. (option c)

• Macrophages, types of WBCs - Neutrophils, Basophils, Eosinophils, Monocytes, NK cells -- all are part of innate immunity which helps in recognition of the site of infection by the pathogen causing inflammation at that site.
• B-lymphocytes are part of Acquired or adaptive immunity.
• As the macrophages reach the site of infection, they can present antigens to T-cells which in turn produce signals to either activate Tc cells or T-cytotoxic cells to kill virus-infected cells or specific B cells to produce antibodies against the pathogen.
• B and T memory cells are also present.
• Innate immunity is present since birth whereas acquired immunity is acquired over a lifetime.