Effects of multiple injections of liposomal doxorubicin on pharmacokinetics, therapeutic outcome, and toxicity were studied in mice using different dosing schedules and dose intensities. Biodistribution of doxorubicin to the cutaneous tissues of mice (skin and paws) and to orthotopically implanted mammary tumors (4T1) was examined. Weekly intravenous administration of pegylated (STEALTH) liposo...