ACKNOWLEDGEMENTS
We are grateful to J. Rudenskaya from the Faculty of Biology, Moscow
State University who provided us with the culture of Euglena
gracilis , and to I. Aldobaeva for culturing Dictyostelium . The
study was supported by the Russian Science Foundation: FT-IR
measurements, grant № 19-13-0011; staining and confocal microscopy,
grant № 18-29-13014. This research was done using equipment of the Core
Centrum of the Institute of Developmental Biology, Russian Academy of
Sciences.