镰状细胞病的特征是红血球形状发生突变，由平滑的圆圈形状改变为新月形或半月形。
Sickle-cell disease is characterized by a modification in the shape of the red blood cell from a smooth, donut-shape into a crescent or half moon shape.
肾小球内由增生的壁层上皮细胞组成的新月体。
Seen here within the glomeruli are crescents composed of proliferating epithelial cells.
成熟小配子母细胞内有许多新月形的小配子。
Mature microgametocyte has many microgametes of crescent shape.
壁层上皮细胞形成新月体性肾炎的肾小球，新月体从四周挤压毛细血管丛。
Here is another glomerulus with epithelial crescents squashing the glomerular tufts from all sides.
干细胞研究日新月异。
干细胞研究日新月异。
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