After incubation, the test mixtures were chilled in ice-water bath, and, immediately, aliquots of the virus samples were 100-fold diluted with ice-cold Dulbecco’s phosphate-buffered saline (PBS) without Ca2+and Mg2+containing 0
After incubation, the test mixtures were chilled in ice-water bath, and, immediately, aliquots of the virus samples were 100-fold diluted…