Wayne snapped his fingers: "That's right! That's right! That's exactly it! A necromancer who is Patient Zero, but also has living organs and tissues in his body, both of these conditions are met, which is as rare as winning the lottery. Moreover, if I'm not mistaken, Marcus has the ability to think and remember, which means that at least all or part of his central nervous system is intact and functioning, and I can find the antibodies from there."

After a moment of contemplation, Rachel suddenly asked, "Assuming that Marcus has viral antibodies in his central nervous system, wouldn't the entire extraction process endanger his life?"

Wayne: "The idea of ​​harming the life of an undead... is interesting, but I understand what you mean..."

Wayne crossed his arms, pondered for a while, and then gave this answer: "If I had the technology and equipment from His Majesty's world, I would be 100% confident that I could extract the antibodies from Patient Zero's body without harming him."

Rachel stared at Wayne and said, "But you didn't."

Wayne sighed: "Yes, I didn't... Well, then it depends on the situation."

"If antibodies can be extracted from areas such as the spinal nerves or optic nerves, then the damage I caused to Marcus will be negligible... But if effective antibodies cannot be extracted from these areas, I will have to locate the surgical site on the brain, cerebellum, and brainstem, which may cause permanent and irreversible damage."

Rachel asked in a deep voice, "What kind of injury?"

Wayne: "Marcus might experience amnesia, aphasia, mania, and in the worst-case scenario, he'll die forever... I mean... a second death..."

Rachel bit her lower lip and remained silent.

Wayne asked tentatively, "What? Is Marcus a very important person? Or does His Majesty have other instructions?"

Rachel took a deep breath: "No...do everything you can, at all costs, to extract the antibody."