Son cries about death in cells (8)
I believe the answer is:
necrosis
'death in cells' is the definition.
'necrosis' can be an answer for 'death' (necrosis is a kind of death). I'm not sure about the 'in cells' bit.
'son cries about' is the wordplay.
'about' indicates an anagram.
'son'+'cries'='soncries'
'soncries' anagrammed gives 'NECROSIS'.
Can you help me to learn more?
(Other definitions for necrosis that I've seen before include "Death of tissue cells" , "Localized death of cells" , "Localised death of living cells" , "Death of a piece of bone or tissue" .)