Scali V, Montanelli E
J Exp Zool. 1975 Sep;193(3):361-7. doi: 10.1002/jez.1401930312.
In the anterior part of the midgut and in the Malpighian tubules of the stick insect Bacillus rossius, about 10% of the epithelial cells develop endonuclear bodies which appear as DNA-RNA masses; in these cells the usual nucleoli are no longer evident. The DNA-RNA bodies are first formed in third instar larvae, become numerous in the fourth instar and persist in adults. In all larval instars and adults a different kind of DNA-body has been noticed in the epithelial cells of the posterior midgut. The DNA-RNA bodies of the anterior midgut and of the Malpighian tubules have been interpreted as the result of somatic gene amplification, whereas the DNA masses of the posterior midgut are likely due to a virus infection.
在竹节虫罗斯氏杆菌的中肠前部和马氏管中，约10%的上皮细胞会形成核内体，其呈现为DNA - RNA团块；在这些细胞中，通常的核仁不再明显。DNA - RNA体首先在三龄幼虫中形成，在四龄幼虫中数量增多，并在成虫中持续存在。在所有幼虫龄期和成虫的后肠上皮细胞中都发现了一种不同类型的DNA体。中肠前部和马氏管中的DNA - RNA体被解释为体细胞基因扩增的结果，而后肠中的DNA团块可能是病毒感染所致。
