Belova L M, Krylov M V
Parazitologiia. 1998 May-Jun;32(3):268-76.
After the carried out examination of different animals belonging to four phyla, Annelida, Mollusca, Arthropoda, and Chordata, the blastocysts were detected within three phyla, Annelida, Arthropoda, and Chordata. Within the phylum Annelida the blastocysts were found in Hirudinea, within the phylum Arthropoda--in Insecta, within the phylum Chordata--in Amphibia, Reptilia, Aves, and Mammalia.
在对分属于四个门（环节动物门、软体动物门、节肢动物门和脊索动物门）的不同动物进行检查后，在三个门（环节动物门、节肢动物门和脊索动物门）中检测到了囊胚。在环节动物门中，在蛭纲中发现了囊胚；在节肢动物门中，在昆虫纲中发现了囊胚；在脊索动物门中，在两栖纲、爬行纲、鸟纲和哺乳纲中发现了囊胚。
