The samples were stained for CD138 as well as tryptase, an enzyme that detects mast cells, which may resemble plasma cells and lead to false diagnoses of chronic endometritis.

• 研究人员使用一种免疫染色法来检测CD138，这是一种存在于细胞表面的醣蛋白，可以侦测原生质细胞的存在；