[PDF][PDF] Abnormal nodal flow precedes situs inversus in iv and inv mice
We examined the nodal flow of well-characterized mouse mutants, inversus viscerum (iv)
and inversion of embryonic turning (inv), and found that their laterality defects are always
accompanied by an abnormality in nodal flow. In a randomized laterality mutant, iv, the
nodal cilia were immotile and the nodal flow was absent. In a situs inversus mutant, inv, the
nodal cilia was motile but could only produce very weak leftward nodal flow. These results
consistently support our hypothesis that the nodal flow produces the gradient of putative …
and inversion of embryonic turning (inv), and found that their laterality defects are always
accompanied by an abnormality in nodal flow. In a randomized laterality mutant, iv, the
nodal cilia were immotile and the nodal flow was absent. In a situs inversus mutant, inv, the
nodal cilia was motile but could only produce very weak leftward nodal flow. These results
consistently support our hypothesis that the nodal flow produces the gradient of putative …
Abstract
We examined the nodal flow of well-characterized mouse mutants, inversus viscerum (iv) and inversion of embryonic turning (inv), and found that their laterality defects are always accompanied by an abnormality in nodal flow. In a randomized laterality mutant, iv, the nodal cilia were immotile and the nodal flow was absent. In a situs inversus mutant, inv, the nodal cilia was motile but could only produce very weak leftward nodal flow. These results consistently support our hypothesis that the nodal flow produces the gradient of putative morphogen and triggers the first L–R determination event.
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