Display Case:

Cracked, warped, malfunctioning.
Leaking viscous, glowing green liquid.
Ghost:

Grotesque, translucent.
Pulsating, misshapen organs visible.
Uneven limbs, twisting and contorting unnaturally.
Disturbing appendages or malformed body parts.
Undefined face, featureless mask with glowing red orbs for eyes.
Laboratory Environment:

Dark and oppressive.
Flickering fluorescent lights casting long, distorted shadows.
Broken and malfunctioning equipment with sparking wires.
Bubbling beakers filled with glowing, noxious liquids.
Cryptic symbols and bloody medical instruments on the floor.
Overall Atmosphere:

Despair, dread, and imminent danger.
Elements of noise and distortion creating unease.
Blurred lines between reality and illusion.