OXT and spindle cell hemangioma: In the rest of the nuclei, co-labeling of OXT and AVP reaches a peak at PN7 that thereafter steadily decreases over time (Fig. 4u–w and Supplementary Fig. 3q–s), with the exception of SCH which is primarily constituted by AVP-expressing neurons (Supplementary Fig. 3t and Fig. 5, Tables 1 and 2; SCH neurons: PN0: OXT: 0.69% ± 0.40; AVP = 98.93% ±  0.48; OXT + AVP = 0.12% ± 0.12; PN7: OXT = 0.16% ± 0.16; AVP = 99.08% ± 0.14; OXT + AVP = 0.54% ± 0.18; Adult: OXT = 2.22% ± 0.86; AVP = 96.05% ± 1.22; OXT + AVP = 1.73% ± 0.79; n = 4 per each stage).