Plating 2 48 well plates of Dv-1 cells for DiNV titering

Using 2 48 well plates with the interior 20 wells only, meaning I’ll need 40 wells of cells. Plates will have this layout:

  1 2 3 4 5 6 7 8
A   cell control 10^-1 10^-2 10^-3 10^-4 10^-5  
B   500ul medium 200ul 10-1 dilution 200ul 10-2 dilution 200ul 10-3 dilution 200ul 10-4 dilution 200ul 10-5 dilution  
C   500ul medium 200ul 10-1 dilution 200ul 10-2 dilution 200ul 10-3 dilution 200ul 10-4 dilution 200ul 10-5 dilution  
D   500ul medium 200ul 10-1 dilution 200ul 10-2 dilution 200ul 10-3 dilution 200ul 10-4 dilution 200ul 10-5 dilution  
E   500ul medium 200ul 10-1 dilution 200ul 10-2 dilution 200ul 10-3 dilution 200ul 10-4 dilution 200ul 10-5 dilution  
F                
  • Scraped 1 flask of confluent Dv-1 cells and spun down at 800rpm for 4 minutes in a 15mL conical
  • Removed the supernatant
  • Resuspended the cells in 1mL medium
  • Used 20ul in a hemocytometer to count the cells:
    • Q1: 494 cells
    • Q2: 578 cells
    • Q3: 468 cells
    • Q4: 512 cells
    • Average: 513 cells
  • Total in the 1mL that should be 5,130,000 cells
  • I was not sure how to do the calculation here at the time, I just resuspended all the cells to a total of 10mL
  • Then added 200ul of that mixture to each of the 40 wells in the plate
    • this ends up being about 100,000 cells per well
  • These cells were let to sit in the 23C incubator overnight before inoculation