Studies suggest that monoamine neurotransmitter concentrations are low in PKU patients.
Compared to hot vents from other regions, Mn, Fe, and other trace metal concentrations are low.
ROV dives since 2006 have observed A monticola hundreds of times at an average depth of 1,236m where both temperatures and oxygen concentrations are low and where various crustaceans, sponges, corals, and echinoderms also live.
However, it can add additional costs if only several genes are of interest, is limited when mRNA concentrations are low (although this is changing with the advent of single cell sequencing13), and generally still requires corroboration via additional quantitative methods12.
Indeed, the ferricline is likely deeper than the pycnocline (found above 400 m46) as the concentrations are low and homogeneous throughout the entire 0- to 500-m profile (Fig. 1).
Nutrient concentrations are low in most areas of the open ocean, and as a result this great expanse of water contains only a small percentage of all marine organisms.
U-II plasma concentrations are low in healthy individuals [13].
Total soil K and P concentrations are low 52 and 118 μg g−1 respectively.
Stored polyphosphates are used in situations when phosphate concentrations are low.
The soil major nutrient (Ca, K, P) concentrations are low, another characteristic of ultramafic soils.
Thus, Ag from the NPs remained bioavailable even after partial sulfidation and when water column total Ag concentrations are low (<0.002 mg/L).
