Hello guy, been a while since I was here, recently I've been studying biology and we had a brief explanation on what cripsr cas9 is. My teacher does not have answers to the questions I need so I will ask them here and sorry If there is misspelling here and there, I am on my phone. First of, does the crispr cas9 move from one cell to the other? Or just be in the same cell? If it doesn't, does that imply we won't be able to edit an adult human? But just a few cells of a growing human before it reaches full maturity? And if so, I think there were 200 of different types of cells in the human body, can we just edit a few cells and let it replicate and after a few months/years all the old types die out and be replaced by the new mutation that has been inserted into the cells?