If we're talking about cells, then that makes it a religious argument... 
Seriously though, have I not been clear?
Is "zygote/fetus = human (individual)" ambiguous in some way that I'm not aware of? What am I missing here?

Seriously though, have I not been clear?
Is "zygote/fetus = human (individual)" ambiguous in some way that I'm not aware of? What am I missing here?