GENERAL HISTOLOGY

Detailed explanation-1: -The immune response is how your body recognizes and defends itself against bacteria, viruses, and substances that appear foreign and harmful.

Detailed explanation-2: -Types of immunity: Active natural: Body produces antibodies in response to exposure to a live pathogen. Active artificial: Body produces antibodies in response to a vaccine. Passive natural: Antibodies are passed from the mom to her baby through the placenta and breastmilk.

Detailed explanation-3: -• By neutralizing exotoxins, antibodies can prevent disease mediated by bacterial pathogens such as Corynebacterium diphtheria and Clostridium tetani. • Antibodies alone or with complement-derived split products can opsonize pyogenic pathogens such as Streptococcus pneumoniae.