... that the gene sets the chirality at the one-cell stage, the earliest observed symmetry-breaking event linked directly to body handedness in the animal kingdom. The early intracellular chirality is superseded by the inter-cellular chirality during the 3rd cleavage, leading to asymmetric nodal and Pitx expression...

.... Gelatinous fibres in tendrils. (A,B) Tendrils of the loofah melon ( Luffa species, Cucurbitaceae) before (A) and after (B) they encounter a support, when tendrils have contracted by internal coiling around a point of perversion (arrows), with equal numbers of coils of opposite handedness on each side. (C,D...

... Handedness Mouse embryo Intra-flagellar transport Lefty2 Hnf3β Dynein is a large multi-subunit protein complex consisting of two heavy chains complexed to intermediate, light intermediate and/or light chains( Harrison and King, 2000 ). The dynein family has been divided into two subfamilies...

...-tokyo.ac.jp ) 28 9 2001 © 2001. 2001 Sea urchin Adult rudiment Left-right asymmetry Half embryo Handedness Indirect-developing sea urchins pass through planktotrophic larval stages during which they form an adult rudiment, and then metamorphose into benthic juveniles ( Okazaki...

... of iv/iv cells to both the heart and the visceral yolk-sac. * Author for correspondence 21 08 1990 © 1990 by Company of Biologists 1990 asymmetry handedness chimeras situs inversus Handed asymmetry is the consistent difference between left and right sides...

.... We propose a model for the development of handedness in bilateral animals, comprising three components. (I) A process termed conversion , in which a molecular handedness is converted into handedness at the cellular level. A specific model for this process is put forward, based on cell polarity...

... direction for the intercalation of new positional values. © 1989 by Company of Biologists 1989 Tetrahymena thermophila mirror image ciliary rows handedness doublet positional information In the accompanying paper ( Nelsen et al . 1989a ), we demonstrated the non-genic nature...

...Lorette C. Javois; Laurie E. Iten ABSTRACT The pattern of differentiated wing structures formed following 180° rotation of the undifferentiated wing bud tip on its base was examined in detail. These analyses were performed to determine the handedness and origin of the supernumerary structures which...