Jia-Ye Li  ^#, Fan Liu  ^#, Jing Xu, Ye-Jin Kim, Oh-Hoon Kwon, Bin Xia, Huan Wang*, Steve Granick*. The ergodicity question when imaging DNA conformation using liquid cell electron microscopy.  Proc. Natl. Acad. Sci. U. S. A.  2023, accepted.