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. Author manuscript; available in PMC: 2020 Jul 7.
Published in final edited form as: Biol Bull. 2019 Jul 8;237(1):1–15. doi: 10.1086/704209

Figure 5.

Figure 5.

SDS PAGE of guanidine extracted proteins from squid pens and shrimp shells. The extracted proteins from the pens are shown for comparison against extracted proteins from white shrimp shell, a mineralized chitinous structure.