Confluent BHK-21 monolayers were inoculated with serial dilutions of virus suspensions for 45 min under standard culture conditions (37°C, 5% CO2). Then, monolayers were overlaid with 1× DMEM supplemented with 2% FBS and 0.6 to 0.7% agar and incubated for 20 to 24 h. Cells were then fixed with 10% formaldehyde, the agar overlay was removed to stain cells with 2% crystal violet in 10% formaldehyde, and plaques were counted.
Do you have any questions about this protocol?
Post your question to gather feedback from the community. We will also invite the authors of this article to respond.