mBest2 is expressed in mouse OSNs. (a) Primers specific for mBest1, -2, and -4 were used to amplify cDNA obtained from RNA of OE, testis, and heart. (b) Primers specific for mBest2 were used to amplify cDNA made from RNA of 2 OSNs, 10 OSNs, and 10 supporting cells (S). Other negative controls are resuspension media for OSNs (M), retrotranscriptase free sample (RT−) and water-only sample (W).