On a question of Vera T. Sós about size forcing of graphons
O. Cooley, M. Kang, O. Pikhurko, Acta Mathematica Hungarica 168 (2022) 1–26.

3D printed cell culture grid holders for improved cellular specimen preparation in cryo-electron microscopy
F. Fäßler, B. Zens, R. Hauschild, F.K. Schur, Journal of Structural Biology 212 (2020).