O si tun je omo egbe African Academy of Sciences at Academy of Toxicological Sciences.. 
Ìbẹ̀rẹ̀pẹ̀ ìgbóhùngba sáfẹ́fẹ́ lé jẹ́ ìgúnjú padà sí ìparí àwọn ọdún 1950 nígbàtí Western Region tẹ́lẹ̀ ṣe ifilọlẹ ìfihàn ìfihàn àkọ́kọ́ ti Nàìjíríà.. 