The cells involved in defence against against pathogens are

Event in body defence against infection are

Event in body defence against infection are

The regression in size of which organ is associated with reduction in the power of defence against invasion by pathogens with ageing?

The regression in size of which organ is associated with reduction in the power of defence against invasion by pathogens with ageing?

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

Which one provides non-specific defence against pathogens ?

A lymphokine involved in defensive reaction against viruses is

A lymphokine involved in defensive reaction against viruses is

A lympokine involved in defensive reaction against viruses is

Which one provides non- specific defence agianst pathogens?