acellular

adj.not made up of or divided into cells

同义词：noncellular

1. Viruses are considered acellular because they do not have a cellular structure.
   病毒被认为是非细胞的，因为它们没有细胞结构。
2. Acellular vaccines contain no whole cells, only specific proteins or components.
   非细胞疫苗不含完整细胞，只含特定的蛋白质或成分。