Acquired immunity is the resistance of the body to new pathogens or that have infected the body before, If the second line of defence failed in getting rid of the foreign body, the body...
There are two systems of immunity in man, which are Natural (Non-specific or innate) immunity, Acquired ( Specific or adaptive ) immunity, Although the two systems of immunity are different, they work together in cooperation...
The life of any living organisms is exposed to continuous threats either from Biological sources (such as pathogens including some insects, animals, protozoa, fungi, bacteria and viruses), Non-biological sources (such as accidents, natural disasters...
