Stationed, perhaps, to correct against disease (9)
I believe the answer is:
antidotes
'correct against disease' is the definition.
I can't tell whether this defines the answer.
'stationed perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'stationed' is an anagram of 'ANTIDOTES'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for antidotes that I've seen before include "Remedies" , "Counteractions to poisons" , "Cures for poisons" .)