von Kraft A
Institut für Anatomie und Zellbiologie, Philipps-Universität, Marburg, Deutschland.
Ann Anat. 1995 Jun;177(4):367-74.
Gastrulae of Triturus alpestris were laterally fused (body axes in equal directions). The parabiotic larvae mostly showed an undivided body with tail, but exhibited two heads. Defects of organogenesis were frequently observed in the gut, and, to some fewer extent, in the heart. The gut mostly develops undivided, the heart in singular or (with transitions) as two organs. The number of organ-inversions and partial inversions was high (table 1). In addition a transindividual organ-symmetry (mirror-image symmetry of the "pair situs") was abundant (table 3, fig. 6) and the gut and the habenular nuclei showed a strong dominance for that phenotype. The organ inversions were more abundant in the right organ or part of the organ. These right-left-differences were statistically significant referring to the inversion tendency of the heart and the habenular nuclei (table 2). This "left-dominance" observed in the organ Anlagen investigated is discussed in regard to results published previously.
高山蝾螈的原肠胚侧向融合（身体轴方向相同）。联体幼虫大多呈现出一个未分割的带有尾巴的身体，但有两个头。在肠道中经常观察到器官发生缺陷，在心脏中观察到的程度相对较轻。肠道大多未分割发育，心脏为单个或（有过渡情况）为两个器官。器官反转和部分反转的数量很高（表1）。此外，跨个体的器官对称性（“成对位置”的镜像对称）很常见（表3，图6），并且肠道和缰核在该表型中表现出强烈的优势。器官反转在右侧器官或器官的一部分中更为常见。就心脏和缰核的反转倾向而言，这些左右差异具有统计学意义（表2）。根据先前发表的结果，对在所研究的器官原基中观察到的这种“左侧优势”进行了讨论。
