In Fig. 1a, the case is illustrated where the underlying fitness landscape is symmetrical about the IT, i.e. the fitness costs of over-ingestion equal the costs of under-ingestion for a given nutrient relative to the IT (and in the case illustrated in Fig. 1a, the costs are also symmetrical between the two nutrients).
Beyond any overall error in reporting, the question of differential error in which men tend to over- or under-report water ingestion, filter use, and duration of bathing and showering is unknown, but seems unlikely.
Likewise, further investigations should aim at determining the amount of NM that can enter the body upon ingestion under different experimental conditions taking into account a variety of different test substance preparations.
Backer et al. (2000) exposed subjects to THMs in tap water under controlled conditions through ingestion, showering, and bathing, and measured blood concentrations before and after exposure.
Although this study does not rule out H5N1 infection leading to disease and possible transmission to other mammals and birds by domestic cats under natural conditions, without ingestion of infected birds, cats do not represent a major risk in the epidemiology of H5N1 influenza.
Two thirds of cases have been exposed to progesterone ingestion under oral contraception prior to the eruption.
The glycemic index (GI) measures the area under the blood glucose curve after ingestion of a specific carbohydrate-containing food and indicates how much this food increases blood sugar and subsequently insulin production (Brouns et al., 2005).
Under an average dust ingestion scenario, diet is the major pathway, whereas under a high dust ingestion scenario, intake via dust and diet are roughly equal in importance.
To examine the relationship between the exposure of participants in this study with concentrations in their serum, we plotted serum concentrations of ∑HBCDs for a given individual against exposure a) via diet and dust (under an average dust ingestion scenario) combined, b) via diet and dust (under a high dust ingestion scenario) combined, c) via diet alone, and d) via dust ingestion alone.
All of our dietary intake estimates fall within the range of 0.02 0.1 mg/kg-day, except for infants living in fluoridated areas under the RME scenario, primarily due to ingestion of water.
Protein composition, oxidative stability, and mineral composition of milk were investigated under conditions of iron ingestion through bovine drinking water (infused) as well as direct iron addition to commercial milk in 2 studies.
