Fig. 4From: Comparative transcriptome analysis uncovers roles of hydrogen sulfide for alleviating cadmium toxicity in Tetrahymena thermophilaImages of live T. thermophila cells under ultraviolet excitation light. Cells were exposed to nutrients only (a), 70 μM NaHS (b), 30 μM Cd (c), and 30 μM Cd+ 70 μM NaHS (d). Scale bar = 10 μm. e histogram of particle size distribution obtained from corresponding images. f The number of CdS nanoparticles with different treatments (n = 25)Back to article page