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hes5.7xenopus paraxial mesoderm [+] 

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Experiment details for hes5.7

Nagano T et al. (2006) Assay

Shisa2 promotes the maturation of somitic precursors and transition to the segmental fate in Xenopus embryos.

Gene Clone Species Stages Anatomy
hes5.7 xenopus NF stage 18 presomitic mesoderm , somite

  Fig. 5. Segmental clock and number of somites in Shisa2 morphants. Whole-mount in situ hybridization of wild-type embryos (A-C) or embryos unilaterally injected with MO1 (D-F) at stage 18 (posterior view, dorsal toward the top). The phase of cyclic ESR9 expressions was determined according to Li et al. (Li et al., 2003). (A,D) Phase I. (B,E) Phase II. (C,F) Phase III. Arrowheads in D-F indicate the anterior border of ESR9 expression. The phases of the ESR9 expression between the MO-injected and uninjected side were symmetrical (5mis, n=14/17; MO1, n=24/24; MO2, n=25/29); however, the expression domain expanded anteriorly in the Shisa2-depleted side (5mis, n=0/19; MO1, n=18/24; MO2, n=22/29). (G-L) Longitudinal sections of the embryos unilaterally depleted Shisa2 stained with hematoxylene and eosin at the 6-9 somite stage. MO-injected sides are indicated on the left. (G,I,K) Sections of the level at the first somite. (H,J,L) Sections in a more posterior region of G, I and K. The positions of the last formed somites are displaced anteriorly in the Shisa2-depleted sides, for a distance of one (J; 5mis, n=2/11; MO1, n=10/16; MO2, n=6/15) or two (L; 5mis, n=0/11; MO1, n=2/16; MO2, n=4/15) somites.