Fig. 4: Morphology of HK-2 cells was observed under the transmission electron microscope.

A, B HK-2 cells were treated with PBS or 10 μg/ml LPS for 24 h (magnification, 2000x). C, D Organelles of normal HK-2 cells or LPS-injured HK-2 cells (magnification, 10,000x). Nucleus (blue arrow), mitochondria (orange arrow), endoplasmic reticulum (green arrow), intact cell membrane (pink arrow), broken cell membrane (red arrow), vesicles (purple arrow).