methyl green-pyronin staining

例句：

1. 1. This stainis used to identify the presence of DNA in cells.
   这种染色剂用于识别细胞中是否存在DNA。
2. 2. The pathologist stained the tissue with this stain before examination.
   病理学家在检查之前用这种染色剂对组织进行了染色。
3. 3. The staining process is crucial for detecting abnormalities in tissues.
   染色过程对于检测组织中的异常至关重要。