Ewing sarcoma is thought to arise from neuroectodermal cells, and which look like small, round, blue cells on microscopy.

尤因肉瘤被认为源于神经外胚层细胞；它们在显微镜下呈现为小的、圆形的蓝色细胞。

An undifferentiated neuroblastoma is mostly comprised of neural crest cells, which are sometimes called small round blue cells, due to a lack of cytoplasm, and a large blue nuclei.

未分化型神经母细胞瘤主要由神经嵴细胞组成，有时也被称为蓝色小圆细胞，这是由于细胞缺少细胞质，且有较大的蓝染的细胞核。