“…Concerning the body distribution, doxorubicinloaded SLNs caused higher drug concentrations in lung, spleen and brain, while the solution led to a distribution more into liver and kidneys [76]. Furthermore, incorporation of doxorubicin into SLNs strongly enhanced its cytotoxicity in several cell lines [77,78]. In particular, in the human colorectal cancer cell line HT-29, the intracellular doxorubicin content was double after 24 h exposure to loaded SLNs versus the conventional drug formulation [78].…”