- A possibility to overcome P-glycoprotein (PGP)-mediated multidrug resistance by antibody-targeted drugs conjugated to N-(2-hydroxypropyl)methacrylamide (HPMA) copolymer carrier. St'astný, M., Strohalm, J., Plocová, D., Ulbrich, K., Ríhová, B. Eur. J. Cancer (1999)