4Wester K,Andersson AC,Ranefall P,et al.Cultured human fibroblasts in agarose gel as a multi-functional control for immunohisto-chemistry.Standardization of ki67(MIB1) assessment in routinely processed urinary bladder carcinoma tissue[J].J Pathol,2000,190(4):503-511.
5Layfield LJ,Gupta D,Mooney EE.Assessment of tissue estrogen and progesterone receptor levels:a survey of current practice,techniques,and quantitation methods[J].Breast J,2000,6(3):189-196.