Defence Against Extra-Cellular Pathogens

Question 1

Defensins

Answer 1

Anti microbial peptides;
Innate defence;
Produced by leukocytes and epithelial cells;
Directly damaging to certain microbes;

Question 2

Antibody interactions with defence components

Answer 2

Bind to antigen and neutralise activities of bacterial toxins or viruses;
Antibodies can act as intermediaries to activate other defence components hat interact with FC region of antibodies;

Question 3

Complement activation;
Phagocyte binding;
Mast cell binding;
NK cell binding;

Answer 3

IgG and M;
IgG and IgA;
IgE;
IgG;