Biochemistry for member of a West African people (3)

I believe the answer is:

ibo

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'african people' is the definition.
(the Ibo or Igbo people of Nigeria)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for ibo that I've seen before include "SE Nigerian language" , "W African language" , "Language used by some Africans" , "Language of Nigeria" , "One of chief cultural languages of Nigeria" .)

I've seen this clue in The Globe and Mail.

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