Transubstantiation and death

I thought of an interesting potential example of something like transubstantiation in "the real world". Now, I hold to the fact that there is no real transubstantiation in nature (it's a mystery, not a problem; we wouldn't expect to find neat explanations, right?). Nevertheless, I was thinking of death. It seems to me that at the moment of death, whatever moment that is, the substance of the person (human being) changes (corpse), but the "accidents" or properties stay more or less the same. This isn't a perfect analogy (clearly some of the properties change or we wouldn't be able to tell that the person was dead) but it gives some insight, I think, into the substance-accidents-change piece.