Fig. 4. Fkh3 specifically marks cells in the sensory lineage. (A,B) Whole-mount staining of a Fkh3 ^lac-z/+ mouse for ß-gal at E11.5 shows expression of ß-gal highly restricted to cranial and spinal sensory ganglia (schematic in B). (C) Coronal section through the lumbar region of the embryo showing that ß-gal is highly restricted to the sensory dorsal root ganglia at a cellular resolution. Abbreviations: Cerv, cervical; DRG, dorsal root ganglia; FGn, facial ganglion; JGn, jugular ganglion; Lumb, lumbar; Sacr, sacral; SGn, superior ganglion; TGn, trigeminal ganglion; Thor, thoracic. Scale bars: 1 mm in A; 100 µm in C.