“One cannot define a ‘living cell’ as not being alive and have it make sense.”
But you could define a single living cell as not sufficiently well developed to be able to be endowed with a soul.
I guess if you had a bare car engine on the assembly line waiting to grow into being a car that can move about, I don’t think you would call a car engine an “unborn car”.
This sounds like the lib I once debated about 1+1 =ing something other than 2.
Cars are not human. Not even close to relevant to the point.