date:Jan 20, 2022
hat cells taken from a living animal may contravene the prohibition of eating flesh torn from a living animal.
Essentially, all authorities would agree that cells taken from a kosher species following religious slaughter would be able to form a kosher product. While some authorities might be willing to accept cells taken from living animals (based on a number of factors), many will likely only accept cell lines derived from slaughtered animals.
Another factor under discussion, explains Kenisbe