What are soldiers of the body in offence and defence ?

Why are WBCs called soldiers of the body?

What is the role of the B-cells in the body's defence against infections?

Ink glands or sacs produce coloured pigment which is ejected out into the water and form smoke screen for offence and defence. Such sacs are found in

Ink glands or sacs produce coloured pigment which is ejected out into the water and form smoke screen for offence and defence. Such specs are found in

Ink glands or sacs produce coloured pigment which is ejected out into the water and form smoke screen for offence and defence. Such specs are found in

Ink glands or sacs produce coloured pigment which is ejected out into the water and form smoke screen for offence and defence. Such specs are found in

What are T-cells? How do they help in body defence?

Name the cells that release pyrogens. What is the role of these substances in the defence of the body?

Organelles of offence and defence in Paramecia are