Sukhodol'skaia A N, Zolotareva G A
Arkh Anat Gistol Embriol. 1976 Aug;71(8):15-21.
The fine structure of cells of the conglomerates formed after dissociation of tissues of fresh-water sponges has been studied. In the development of the conglomerates of Ephydatia fluviatilis an important role is played by amoebocytes and choanocytes. In amoebocytes the shape of the nucleus, the mitochondria structure, the Golgi complex and endoplasmic reticulum have been found to change. In choanocytes, in addition to changes of organoids, the structure of the collar and flagella are subjected to desorganization. They have great plasticity and are able to re-differentiate in pinacocytes according to their position in the conglomerates. The transformation of amoebocytes and choanocytes into pinacocytes is accompanied by a successive modification of the nucleus and the cytoplasmic structures. In redifferentiation of amoebocytes the amount of Golgi apparatus zones decreased, the content of vacuoles of different size and the amount of elements of the agranular endoplasmic reticulum increased, and the defined nucleus disappeared.
对淡水海绵组织解离后形成的聚集体细胞的精细结构进行了研究。在弗氏埃弗海绵聚集体的发育过程中，变形细胞和领细胞发挥着重要作用。已发现变形细胞核的形状、线粒体结构、高尔基体复合体和内质网发生了变化。在领细胞中，除了细胞器的变化外，领和鞭毛的结构也会遭到破坏。它们具有很大的可塑性，能够根据其在聚集体中的位置重新分化为扁平细胞。变形细胞和领细胞向扁平细胞的转变伴随着细胞核和细胞质结构的连续变化。在变形细胞的再分化过程中，高尔基体区域的数量减少，不同大小液泡的含量和无颗粒内质网成分的数量增加，明确的细胞核消失。
