Doctor obtained drug, released today — finally, a possible treatment for COVID (8)
I believe the answer is:
antibody
'doctor' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'obtained drug released today finally a possible treatment for covid' is the wordplay.
I cannot quite see how this works, but
'drug' could be 'od' (o.d.ing is a kind of drugging) and 'od' is found in the answer.
'a' could be 'an' and 'an' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for antibody that I've seen before include "Pathogen fighter" , "personal protection" , "Protective protein in blood which destroys inimical substances" , "Protein produced in the blood" , "Fighter in blood" .)