Individuals show substantial variation in As methylation capacity, which may be partly attributable to availability of vitamins required for one-carbon metabolism [folate, vitamin B12 (cobalamin), and vitamin B6] as well as intake of nutrients that are not required per se but that contribute to the availability of methyl groups, such as protein, betaine, and choline.
Substantial variation in sample sizes as well as intervention duration across the studies was observed (Table 1).
Soil texture and pH in the 0 15 cm surface layer were similar across the 13 fields, but there was a three-fold range of soil C and N as well as substantial variation in inorganic N and available P that reflected current and historical management practices.
Short read alignments revealed almost 367,000 single nucleotide polymorphisms (SNPs) and insertion/deletion polymorphisms (indels), as well as substantial variation in expression levels among contigs.
Our results suggest a clinically important difference in polypectomy rates between surgeons and gastroenterologists after adjusting for patient-level factors, as well as substantial variation among all endoscopists.
Environmental factors explained a substantial part of the variation as well and are thus important to address in rehabilitation and prevention efforts to combat burnout.
The substantial variation in these ratios, as can be seen especially in Estonia, is mainly due to published consumption figures being different depending on the source.
On the other hand, the broad-band photocurrent shows substantial variation in the spectral position as well as spectral width.
The herring fishery, as previously described, has during its long history shown substantial variation in productivity, as is common in fisheries for pelagic species [62].
They also show substantial variation in performance as regards any particular real or simulated case [ 6].
