Implant taken from stem? Be delicate! (5)
I believe the answer is:
embed
'implant' is the definition.
(I know that implant can be written as embed)
'taken from stem? be delicate' is the wordplay.
'taken from' says the answer is hidden in the clue.
'EMBED' can be found hidden inside 'stem be delicate'.
(Other definitions for embed that I've seen before include "the opposite of 19 [DEBUNK]?" , "Surround" , "Fix in the mind" , "Fix fast in something solid" , "Enclose snugly" .)