Fig. 1

Microscopic images of H. pluvialis cells at different SAHL treatment stages. a–f) represent the samples treated with SAHL for 0 h (Control), 1 h (SAHL_1), 6 h (SAHL_6), 12 h (SAHL_12), 24 h (SAHL_24) and 48 h (SAHL_48), respectively. Scale bar = 20 μm