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Int J Pediatr Otorhinolaryngol 150:110920 Funding Open access funding provided by The Science, Technology & Innovation Funding Authority (STDF) in cooperation with The Egyptian Knowledge Bank (EKB)

Vitamin B 12 and homocysteine metabolism The figure shows the biochemical pathway of B-vitamin and homocysteine metabolism, highlighting the vitamin B 12 -dependent reaction catalyzed by methionine synthase

L-Citrulline's role: L-Citrulline is converted to L-Arginine in the kidneys via argininosuccinate lyase

Dietary supplementation with arginine can also regulate the composition of the intestinal microbial community, boost the antioxidant capacity of the intestinal tract, and enhance the immunity of yellow-feathered broilers (Ruan et al., 2020)

[DOI] [PubMed] [Google Scholar] 2.Rutledge SM, Asgharpour A