1. Department of Biological Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
2. Department of Medical Oncology Dana‐Farber Cancer Institute Boston MA 02215 USA
3. State Key Laboratory of Organ Regeneration and Reconstruction Institute of Zoology Chinese Academy of Sciences Beijing 100101 China
4. Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101 China
5. Ragon Institute of MGH MIT and Harvard Cambridge MA 02139 USA
6. Parker Institute for Cancer Immunotherapy Boston MA 02215 USA
7. Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA