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. 1989 Apr;58(4):215-7.
doi: 10.1007/BF00320777.

Detection of P-glycoprotein in human leukemias using monoclonal antibodies

J Mattern  1 , T Efferth, M Bak, A D Ho, M Volm
Affiliations

Detection of P-glycoprotein in human leukemias using monoclonal antibodies

J Mattern et al. Blut. 1989 Apr.

Abstract

Overexpression of a Mr 170,000 membrane glycoprotein (P-glycoprotein) is consistently associated with multidrug resistance in cell lines. Two monoclonal antibodies (Mab) against P-glycoprotein (265/F4 and C 219) were used to examine tumour samples from patients with leukemias for evidence of P-glycoprotein overexpression. High levels of P-glycoprotein (greater than 5% positive cells) were detected with both antibodies in samples from 3 out of 18 patients suggesting that a multidrug resistant phenotype may also occur in human leukemias.

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