Fig. 5. Bone collagen EAA δ¹³C dietary markers for the USR infants compared to terrestrial, marine, and freshwater protein consumers.

Comparative values were calculated from published data (table S12) (17–19, 72–74). Δ¹³C_Val-Phe = δ¹³C_valine − δ¹³C_{phenylalanine} and Δ¹³C_Lys-Phe = δ¹³C_lysine − δ¹³C_{phenylalanine}. Values are also shown for primary producers. PP, primary producer; FWPC, freshwater protein consumer; MPC, marine protein consumer; TPC, terrestrial protein consumer.