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Physiological porphyrin biosynthesis causes photosensitivity in fasted planarians, providing an experimentally tractable animal model of acute porphyrias.

The milk protein Mfge8 promotes fat uptake and slows gastrointestinal motility to optimize nutrient absorption.

Nutrient limitation elicits differential responses in cells lacking the tumor suppressor PTEN and in normal cells, resulting in hyperplastic overgrowth of PTEN mutant tissue independent of additional mutations.

Whereas theories of ecological diversity mostly consider continuously supplied nutrients, a seasonal model uncovers a general mechanism that controls diversity and reconciles conflicting experimental findings.

Spontaneous contractions allow shedding of the fluid boundary layer and thereby stabilize microbiota.

Experimental analysis of SLC38A5 (solute carrier family 38 member 5) in mouse models and cell culture reveals its novel role as a metabolic regulator of retinal angiogenesis by controlling nutrient uptake and homeostasis in blood vessel endothelium.

Multistability and regime shifts are common and species diversity is high in microbial communities when nutrient supplies are balanced and competing species have different stoichiometries of essential nutrients.

The availability of an essential dietary micronutrient is evaluated by an intestinal signaling system that in turn regulates food-uptake and response behaviors by modulating protease expression.

Analytical and numerical analyses reveal that the number of coexisting species exceeds the number of resource only for the structurally unstable case of linear tradeoff.

A quantitative video tracking analysis reveals that to gain the nutrients they need, flies change their decisions to exploit foods with different nutrient contents and explore the environment according to their internal amino acid and reproductive states.