Answer: Interventional Study
Explanation: When a treatment group is compared to standard (control) group it is called Interventional Study
It is called a herd
Im just writing this for the character limit
The answer to this question would be labile.
A permanent cell is the one that will not divide after fully developed. This includes the heart and brain cells. That is why when these organs damaged there will be a permanent loss of function.
Stable cell only divides in some occasion. The example would be liver cells or kidney cells.