Extended Data Fig. 3: Fezf2^BLa neurons are predominately Rspo2⁺ neurons.

a, Confocal images of coronal brain sections containing the BLA along the antero-posterior axis from a representative Fezf2-CreER;H2B-GFP mouse, showing the distribution of Fezf2⁺ neurons labeled with H2B-GFP, and the distribution of Rspo2 and Ppp1r1b expression detected with smFISH. This experiment was repeated in 2 mice. b, High magnification images of the boxed areas in the corresponding overlay images in (a). Arrows in the left three panels indicate that, in the BLa, Fezf2⁺ neurons expressing Rspo2. Arrows in the rightmost panel indicate that, in the BLp, many Ppp1r1b⁺ neurons express Rspo2, but not Fezf2. This experiment was repeated in 2 mice.