I was looking at the idea of receiving an organ transplanted from an animal as in this question. One issue which was not raised is that of tum'ah. Though the transplant might be acceptable for many reasons, might it have a long term implication?
If touching the carcass of a dead animal (at least before it is all dried out) confers some level of impurity (just until the evening?), wouldn't the recipient of an animal heart be constantly impure because his body is in constant contact with the transplanted organ? Wouldn't this mean that he can't ever be involved in the korbanot of a Yom Tov at the Beit Hamikdash?
