https://pmc.ncbi.nlm.nih.gov/articles/PMC21499/
Body pool and synthesis of ascorbic acid in adult sea lamprey (Petromyzon marinus): An agnathan...
Although many vertebrates can synthesize ascorbic acid (vitamin C), it is still unclear from the evolutionary perspective when the ability to synthesize the...
https://en.wiktionary.org/wiki/agnathan
agnathan - Wiktionary, the free dictionary
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