생쥐의 이 유전자의 녹아웃은 니코틴 변형 행동을 촉진한다.[7]유전자변형 돌연변이 마우스 라인(Chrna2L9'S/L9'S 및 Chrna2KO)을 두 개 사용하여, α2* nAChRs가 해마에 의존하는 학습과 기억력 및 사춘기 생쥐의 CA1 시냅스 가소성에 영향을 미친다는 사실을 밝혀냈다.[8]
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