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SDS‐PAGE protein profiles (A) of recombinant (r) and natural (n) purified parvalbumin (PV) isoforms with corresponding heated and raw extracts from the muscle tissue of crocodile, two bony fish (seabass and salmon) and two cartilaginous fish (shark and ray), and immunoblots with parvalbumin‐specific antibodies (ab; B and C). Note: Croc., crocodile
