Hello Rameez,
Yes, you can give improvement after the board's exam, but even if you get less than 75 percentile, do not give improvement rather go for the rechecking of the marksheets, because that would be much more beneficial for you.
For further details, if you have any query you can even visit our website, where there is a detailed description which would be quite helpful for you.
https://medicine.careers360.com/
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