Possible Clues:

• Preserve business qualification in tree
• Prepare for burial
• Make mummy bring me back some ointment
• Preserve human remains
• Preserve doctor used in cooked meal
• Preserve (a dead body)
• Preserve tree with injection of mould breaking antibodies initially
• Use chemicals to preserve a dead body from decay
• Make into mummy
• Anoint with myrrh, say