???searchGeneExpressionExperiment.title???

Search Criteria

Gene/Clone	Species	Stage	Anatomy Item	Experimenter
six4	xenopus		lateral line placode [+] anterior lateral line ganglion,anterior lateral line placode,hyomandibular lateral line,infraorbital lateral line,infraorbital lateral line primordium,occipital lateral line,supraorbital lateral line,trunk lateral line

Too many results?Too few results?

Experiment details for six4

Schlosser G and Ahrens K (2004) Assay

Molecular anatomy of placode development in Xenopus laevis.

Gene	Clone	Species	Stages	Anatomy
six4.S		laevis	NF stage 24 to NF stage 27	lateral line placode

Display additional annotations [+]

Fig. 10. Placodal gene expression patterns in mid-tail bud Xenopus embryos (stages 24–27) in lateral views (anterior is to the left). As in Fig. 9, color-coded arrows and arrowheads are used for the identification of comparable regions of gene expression. Expression in the lens placode is indicated by L. Colors are explained in the schematic drawings, which show the distribution of placodes in stages 24 and 27 embryos (modified after Schlosser and Northcutt, 2000; see Fig. 14 for detailed explanation). By stage 24, the posterior placodal area has extended caudally, the formation of the otic vesicle by invagination of the otic placode has begun, and epibranchial placodes (orange) begin to become recognizable in its ventral part (Schlosser and Northcutt, 2000). By stage 27, the posterior placodal area has broken up into distinct placodes, while invagination of the otic vesicle is continuing (Schlosser and Northcutt, 2000). The lens placode has appeared as a focal thickening. The orange and brown double arrows indicate expression of the respective genes in a region encompassing the facial epibranchial placode and anteroventral lateral line placode, because both placodes are closely apposed and, thus, cannot be differentiated from each other. White asterisks indicate gene expression in the pharyngeal pouches (which can be clearly distinguished from placodal expression domains in transverse sections). The brown asterisk in M indicates downregulation of Pax2 in the region of the anterodorsal lateral line placode. For detailed description, see text. Abbreviations: EB, epibranchial placodes; LL, lateral line placodes; Ot, otic placode or vesicle; vba, ventral branchial arch region (all three germ layers). For additional abbreviations, see Fig. 1.

Gene	Clone	Species	Stages	Anatomy
six4.S		laevis	NF stage 32 to NF stage 33 and 34	lateral line placode

Display additional annotations [+]

Fig. 11. Placodal gene expression patterns in late tail bud Xenopus embryos (stages 32–34) in lateral views (anterior is to the left). As in Fig. 9, color-coded arrows and arrowheads are used for the identification of comparable regions of gene expression. Expression in the lens is indicated by L. Colors are explained in the schematic drawing, depicting the distribution of placodes in a stage 33/34 embryo (modified after Schlosser and Northcutt, 2000; see Fig. 14 for detailed explanation). By stage 33/34, the profundal placode has disappeared, the trigeminal placode is shrinking rapidly, the lens placode and otic placode have completely invaginated to form the lens and the otic vesicle, respectively, and the lateral line primordia have begun to extend from the lateral line placodes (Schlosser and Northcutt, 2000). Again, orange and brown double arrows indicate expression of the respective genes in a region encompassing facial epibranchial placode and anteroventral lateral line placode. White asterisks indicate gene expression in the pharyngeal pouches. Green and yellow asterisks indicate gene expression in the trigeminal and profundal ganglia (which are fused proximately), respectively. For detailed description, see text. Abbreviations: bam, branchial arch mesenchyme; L, lens; Ot, otic vesicle; vba, ventral branchial arch region (all three germ layers). For additional abbreviations, see Fig. 1.