Genuine question, are you talking about certain lab grown meat products vs others? Look at this excerpt from a wired article [1]: At Finless Foods, they take a bit of fish meat and filter it for a particular kind of cell, not so much stem cells but stem-like cells, what they’re calling progenitor cells. “We're looking for cells that have the ability to differentiate into different lineages,” says Selden. “So we're looking for cells that are stem enough.”
The idea is to trick these cells into thinking they’re still in their owner. So by feeding them nutrients like salts and sugars, Finless can get the cells to turn into muscles or fat or connective tissue. Think of it like sourdough yeast: Once you’ve got a starter strain, you can keep making a distinctive bread. “Once each of these companies has a cell line going,” says Selden, “they never have to go back to the initial animal.”
