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. 2002 Aug 1;87(3):251–257. doi: 10.1038/sj.bjc.6600463

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Copyright © 2002 Cancer Research UK

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Relationship between the drug response (doxorubicin) as determined by the in vitro short term test (ordinate) and the immunohistochemical reaction of P-glycoprotein/MDR1 and VEGF. The intensity of immunostaining (negative, weak, moderate, high) is specified as −, +, ++, +++