I am working on expanding a uveal melanoma cell line, but the doubling time is 80 hours and it appears to take about 2-3 weeks for 40-60% confluency in a T25 flask. The growth rate is very slow and I am wondering if anyone has experience with the optimal conditions to grow these types of cells. Also, I am considering passing the cells and allowing them to grow in a six-well plate dish. Maybe the cells will have closer contact and give off growth signalling. Any information would be of great help.