What cell density will be good to generate breast cancer in BALB/C mice? I am planning to use serum-free culture medium to suspend the cells for injection. Please recommend the best suggestion.
It depends on the cell line. I would suggest for fast growing cells 1-2 million should be sufficient. However, for less aggressive cell line you can go up to
3-4 million cells. Make sure the cell viability is around 90-95%, and the cells should be in the log phase. Avoid using over confluent cells.