Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


When a disease causing microbe enters our body . Our immune system responds against it.And when the same microbe enters our body again 
our immune system responds against it vigorously and eliminates it fastly..
1 5 1
bye,good night!
i've maths test 2mmorow
all the best
Immunization is defined as the process by which an individual is made immune or resistant to an infectious disease by administration of an external agent[vaccine].the basic principle of immunization is that on administration of the vaccine,the body starts developing antibodies against it such that the person is protected or immunized from the disease.Body remembers the infectious agent and memory cells are formed which can immediately produce antibodies on further exposure to the infectious agent.Hence,the person fights the infection with the help of pre-existing antibodies and is immunized from the disease
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts