EdU staining was conducted using the BeyoClick™ EdU Cell Proliferation Kit with Alexa Fluor 594 (Beyotime, Cat. No: C00788L). Cells were washed with PBS. Fresh DMEM was added, and then, 10 μM EdU was added into the medium. The cells were incubated for 2 hours at 37°C/5% CO2. After the incubation, the cells were washed with PBS to remove the DMEM and the free EdU probe [36 (link)]. The cells were then fixed in 4% paraformaldehyde at room temperature for 30 minutes before being stained with DAPI for 3 minutes. After an additional wash in PBS, the cells were observed under an inverted microscope [37 (link)].
Free full text: Click here