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Table 2.

hand2 is required for ventral pharyngeal cartilage and the jaw joint

PhenotypePercent hand2 mutants
Severely reduced dorsal cartilage  
Arch 1: PQ + PTP 0.0 (0/135) 
Arch 2: HM + SY 0.5 (0.5/135) 
Severely reduced ventral cartilage  
Arch 1: M 100.0 (135/135) 
Arch 2: CH 100.0 (135/135) 
Arches 3-7 100.0 (135/135) 
Morphological jaw joint loss 97.8 (132/135) 
Arch 2 joint loss 0.0 (135/135) 
PhenotypePercent hand2 mutants
Severely reduced dorsal cartilage  
Arch 1: PQ + PTP 0.0 (0/135) 
Arch 2: HM + SY 0.5 (0.5/135) 
Severely reduced ventral cartilage  
Arch 1: M 100.0 (135/135) 
Arch 2: CH 100.0 (135/135) 
Arches 3-7 100.0 (135/135) 
Morphological jaw joint loss 97.8 (132/135) 
Arch 2 joint loss 0.0 (135/135) 

Animals were fixed at 4 days and Alcian stained, then scored in wholemounts. Both left and right sides of each animal were scored, and counted as half an animal. bh, basihyal.

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