CCC 2300
>The bodies of the dead must be treated with respect and charity, in faith and hope of the Resurrection. The burial of the dead is a corporal work of mercy; it honors the children of God, who are temples of the Holy Spirit.
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CCC 2301
> Autopsies can be morally permitted for legal inquests or scientific research. The free gift of organs after death is legitimate and can be meritorious.
>The Church permits cremation, provided that it does not demonstrate a denial of faith in the resurrection of the body.