Removal includes eggs (3)
I believe the answer is:
ova
'eggs' is the definition.
(term for egg cells)
'removal includes' is the wordplay.
'includes' says the answer is hidden in the clue.
'OVA' can be found hidden inside 'removal'.
(Other definitions for ova that I've seen before include "Potential life sources" , "Eggs; sounds like above" , "Likely end for Russian Fed cup players" , "Female egg cells" , "Prerequisite for procreation" .)