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Figure 2 | BMC Veterinary Research

Figure 2

From: Phenylalanine flux and gastric emptying are not affected by replacement of casein with whey protein in the diet of adult cats consuming frequent small meals

Figure 2

Compartmental models of [13C] phenylalanine distribution following intravenous (IV) or oral (O) dosing. Boxes represent state variables, arrows represent flows, P represents plasma, T represents tissue, G represents gut, kP is the rate constant for reversible exchange between plasma and tissue pools, kemp is the rate constant for gastric emptying, ex is the first-pass splanchnic extraction, and kel is the rate constant for irreversible elimination from circulation.

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