Question

A small does of weakened disease causing microbe

Answer 1

Answer:

A small dose of weakened disease causing microbe is called a Vaccine. A vaccine activates bodys Immune system which immediately forms some special cells that recognize the antigens present on the pathogens surface and generate antibodies against it which kill the pathogen. The special cells produced earlier go into lymphatic systems and specialise to form Memory Cells ow serving as a record of identification of that particular pathogen and the specific antibodies to produce against it should an active one enters the body