Louisa Howard (2012) CIL:39785, Lytechinus pictus, mesenchymal cell. CIL. Dataset

Scanning electron microscope image of Strongylocentrotus drobachiensus [sea urchin] embryo at the late gastrula stage. Embryo was cut to reveal blastocoel cavity. The fertilization envelope dissolves during swimming blastula stage; therefore, the cilia and microvilli can be seen on the outer epithelial layer. The primary mesenchyme cells have formed a syncytial ring, which is the precursor to spicule formation(developing calcareous larval skeleton). A portion of the archenteron can also be seen. A high magnification view of a region of this image is available as CIL:39789. This image is part of a group of SEM images of sea urchin embryos at various stages of development. The group is available as CIL:39782-39791.

扫描电子显微镜成像展示了刺参胚胎在晚期原肠胚阶段的图像。胚胎被切割以揭示胚泡腔。在游动胚泡阶段，受精包膜溶解，因此可以观察到外上皮层上的纤毛和微绒毛。原始间充质细胞已形成合胞体环，这是刺棘形成（发育为钙化幼虫骨骼）的前体。还可以观察到原肠的一部分。该图像区域的高倍放大视图可供CIL:39789查阅。此图像属于一组海胆胚胎在不同发育阶段中的扫描电子显微镜图像集合，该集合可供CIL:39782-39791查阅。