In the Resident Evil remake and its HD Remaster, find the Laboratory Key in the Culture Tank Room after the confrontation with Albert Wesker and the Tyrant. You must also open the Cell Entrance with the MO Disk passcode mechanism; finding the key and reaching the cell are separate steps.
Where to find the Laboratory Key in the remake
After the Wesker and Tyrant confrontation, search the Culture Tank Room for the Laboratory Key. Use it at the cell where Chris is being held.
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How to reach Chris’s cell
The cell door has a separate access requirement: MO Disks transmit the passcodes needed to open the Cell Entrance. In other words, the Laboratory Key is not a substitute for completing the passcode step. The available references do not establish every MO Disk location or a complete rescue route for every edition.
Why the answer can differ by version or route
2002 remake and HD Remaster
The remake reference identifies the item as the Laboratory Key and places it in the Culture Tank Room after the Wesker and Tyrant confrontation. The HD Remaster is a remastered version of that remake, but walkthroughs may describe route-specific details differently.
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A route described in an HD Remaster walkthrough
One HD Remaster walkthrough says that a Master Key found on Wesker’s body can open the cell on a particular route after using all three MO Disks to reach it. That route-specific account does not establish that the Master Key applies to every character path, ending, or release, so do not rely on it if your game’s item or objective differs.
Original 1996 game
In the original release, rescuing the other playable character from a holding cell is described as optional and dependent on collecting MO Disks. The available reference does not confirm the exact key location for every route in that version. If you are playing the original game, identify the release and character route before following remake instructions.
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Quick version check
- If your game calls the item the Laboratory Key, look in the Culture Tank Room after the Wesker and Tyrant encounter.
- If the Cell Entrance is still closed, complete its MO Disk passcode requirement separately.
- If you are following an HD Remaster route that mentions a Master Key on Wesker’s body, treat it as specific to that walkthrough’s route rather than a universal instruction.
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