Spit! What your saliva says about you

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my name's Gordon Proctor and I direct

the mucosal and salivary research group

here at King's College London in the

dental Institute for a number of years

now I have been studying the function of

saliva and salary' glands and so today's

question is why study spit all of the

internal body surfaces are coated by a

fluid which helps to protect them and

prevent disease and saliva fulfills that

function for the mouth this fluid is

packed full of components which have a

antimicrobial function and can control

bacteria and other microorganisms that

are present in the mouth if there are

some diseases which cause a chronic loss

or change of the properties of saliva in

the mouth and not only can these affect

oral health they can also impact on

everyday activities that we take for