‘Pathogens' are
Substances produced against any disease causative
Chemical substances produced by the host cells to kill the parasite animal
Disease spreading factors
Cells which kill the parasites
Identify $X$ from Figure
Against which of the following does interferon act
’Pathogens' are also known as
Some people who have suffered from a disease may not be affected again during their life time; such immunity is called
Which of the following cells are associated with immune system of body