FIGURE 6 Genes involved in vitamin B6 metabolism and their expression levels in metabolic pathways. (A) Genes and metabolites involved in the vitamin B6 pathway. (B) Expression levels of genes related to vitamin B6 synthesis in Corbicula fluminea,Meretrix meretrix, and Ruditapes philippinarum. C represents Corbicula fluminea; M represents Meretrix meretrix; R represents Ruditapes philippinarum.