Carapace is a Codex entry featured in Tom Clancy's Rainbow Six Extraction. It is unlocked by reaching Development Milestone 24.
Transcript[]
INDEX Analysis:
Carapace is an extremely resistant manifestation of
Sprawl synthesized by Chimera cells. Appears to be
partially composed of chemically inert protein and is
nearly indestructible. (Cross-Ref: ballistic and critical
stress threshold experiments)
Carapace structures of varying size can be found within infested environments. Their purpose is not known.
Carapace can also be generated by many Archan variants, acting as damage resistant armor. (INSERT: Lion - Bullets bounce right off them. Aim for Weak Points if you can.)
EXTRAPOLATIONS:
Assessing carapace composition: Appears to be a composed of extremely long-chain proteins woven into a non-protein molecular scaffold. Structure is further hardened by a polymer catalyst. (INSERT: Mira - Structurally similar to carbon nano-fiber but much more complex. And strong.)
Expanding on composition: The molecular scaffold and polymer catalyst have been identified but have no terrestrial equivalent. Synthesis in lab setting has been unsuccessful.
Speculating on biological basis of carapace: Carapace may be an adapted inflammatory immune response to external stimulus. Similarities in terrestrial bacteria: S-layer. (INSERT: Finka - Interesting theory, INDEX! We'll look into that angle.)