Fig. 1 Loss of Leo1 function results in cardiac abnormalities and absence of pigmentation (A, B, C) Lateral view of a two-day-old wild-type embryo (A), a leo1LA1186 mutant (B) and a leo1LA1186 mutant injected with wild-type leo1 mRNA (C). (D, E, F, G) Dorsal view. Expression patterns of cardiac markers, nkx2.5 (D, E) and cmlc2 (F, G), are indistinguishable between wild-type siblings (D, F) and leo1LA1186 mutants (E, G) at the 10 somite stage and 24 h post fertilization, respectively. (H, I) Histological sections. In contrast to wild-type hearts (H), the cardiac chambers of leo1LA1186 mutants are collapsed by 2 dpf (I). o, outflow tract; v, ventricle; a, atrium; sv, sinus venosus.
Reprinted from Developmental Biology, 341(1), Nguyen, C.T., Langenbacher, A., Hsieh, M., and Chen, J.N., The Paf1 complex component Leo1 is essential for cardiac and neural crest development in zebrafish, 167-175, Copyright (2010) with permission from Elsevier. Full text @ Dev. Biol.