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2015-07-02T12:01:14+05:30

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Dilators are the biological compounds or instruments used to dilate some specific passages.
Vaso-dilators such as histamine and serotonin promote the dilation of blood vessels.
Hormones such as adrenalin help in the dilation of pupil during the activity of sympathetic nervous system.
Some surgical dilators help in the dialtion of passges such as oesophagus, cervix etc.
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