RETRACTED: Evaluation of Anticancer Activity of Zi-ZnO, Ti-TiO and Ti–Zn Mixed Oxide Nanoparticles Against MDA-MB-231 Cells Using MTT AssayVishwalinga Prasad B, H.C. Manjunatha, V. Thirunavukkarasu, R. Munirathnam, Umashankar Raja R and Kalai ChalvanEPJ Web Conf., 359 (2026) 01001DOI: https://doi.org/10.1051/epjconf/202635901001