What is also known as acquired immunity?

Answer 1

Acquired immunity is a form of immunity gained from bacteria or viruses by the body ITSLEF. Essentially the body has encountered the pathogen (bacteria/virus) and learnt by itself which anti-bodies to produce to fight it. Once the body has found which antibodies are the most effective this information is stored in "memory cells" which, if encounter the same pathogen can quickly make the correct type antibodies to fight the invading pathogen and defeat it quickly. (antibodies are produced by lymphocytes which neutralize toxins and clump bacterium together meaning the phagocytes can engulf them quicker and digest via enzymes) acquired immunity is "natural" including Innate immunity (antibodies passed through placenta/breast milk. artificial immunity includes Active (given modified bacteria which does no harm but body learns how to produce antibodies) and Passive (injected with Antibodies - requires "top-up")