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Immune response

Non ­ specific responses

Primary defences:

Skin ­ most skin cells are called Keratinocytes, these cells act as a barrier to pathogens.
Mucous membranes - Mucus (made in the goblet cells) trap pathogens then is expelled out
of the body.
Stomach ­ very acidic environment and this kills…

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made of protein
4 polypeptide chains (2 heavy & 2 light/short)
Disulfide bridges between the coils of the antibody (tertiary structure)
Antibodies attach to antigen to neutralise the pathogen.


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