Sharks lemon

The existence of a 19 S pentamer and a homologous 7 S, 4-chain monomer has also been demonstrated in nurse, lemon, and homed sharks (31,35,36) molecular weights of the polypeptide chains are in... 

The 7 S antibodies of the dogfish shark and of the lamprey are almost unaffected by treatment with papain in neutral buffer (29). Klapper et al. investigated the effects of papain and trypsin on the 19 S and 7 S immunoglobulins of the lemon shark, and on 7 S molecules obtained by... 

Amines are responsible for some of nature s unpleasant odors. Amines with relatively small alkyl groups have a fishy smell. For example, fermented shark, a traditional dish in Iceland, smells exactly like triethylamine. Fish is often served with lemon, because the citric acid in lemon protonates the amine, thereby converting it to its better smelling acidic form. 

CHEUNG, R., NiGRELLi, R.F., RUGGiERi, G.D. CILIA, A. (1982) Treatment of skin lesions in captive lemon sharks, Negaprion brevirostris (Poey), caused by monogeneans Dermophthirius sp.). Journal of Fish Diseases, 5,167-170. 

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