Before revision:  Here we show, using E. coli, that the scaling concept also emerges with respect to cell size fluctuations under abrupt starvation, even though the distribution changes with time. We develop a microfluidic device for observing dense and large bacterial populations, under uniform and switchable conditions. Triggering bacterial reductive division by abruptly switching to non-nutritious medium, we find that the cell size distribution changes in a specific manner that keeps its normalized form unchanged;
After revision:  Here we show, using E. coli, that the scaling concept also emerges with respect to cell size fluctuations against starvation. By abruptly switching to non-nutritious medium, we find that the cell size distribution changes in a specific manner that keeps its normalized form unchanged;