What are the three main cell types that can be cultured in a lab and what are their differences?

1. primary cells are directly isolated from human/animal tissue. they represent the tissue and organisms characteristics well, but they have limited proliferative capacity. 2. transformed cells are cells that have a fast growth rate and are stable in maintenance and for cloning. they are usually formed by genetic manipulation, which can lead to non-physiological phenotypes. 3. self-renewing cells that are able to differentiate into other cell types, such as pluripotent stem cells.