Which of the following cells are associated with immune system of body
Neutrophils
Macrophages
Lymphocytes
All of these
‘First line of defence' is known as
Match the columns :
Column - $I$ | Column - $II$ |
$(a)$ Physical barrier | $(1)$ skin |
$(b)$ Physiological barrier | $(2)$ interferon protein |
$(c)$ Cellular barrier | $(3)$ leucocytes |
$(d)$ Cytokine barrier | $(4)$ Saliva in the mouth |
What are pathogens ?
Give scientific reasons : Virus infected cells provide innate immunity to other cells.
Definitions / Explanation : Active immunity & Passive immunity