AUTHOR=Yang Mengliu , Wu Sherry Y. TITLE=The Advances and Challenges in Utilizing Exosomes for Delivering Cancer Therapeutics JOURNAL=Frontiers in Pharmacology VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2018.00735 DOI=10.3389/fphar.2018.00735 ISSN=1663-9812