Different viruses predominate at different periods of the year; during influenza season, for example, influenza may account for over half of all viral cases.
For example, this may account for the occurrence of Nematodirus battus, N. filicollis and Teladorsagia circumcincta at Suldal and Tingvoll which are primary helminths of domestic sheep.
Different social security systems, for example, may partly account for the wide variability of data observed in this study.
For example, in autism, genetics alone may account for less than half of all diagnoses and it is thought that environmental factors must also act during gestation or in the infant to alter brain development.
Furthermore, aspects of the practices beyond the general practitioners (for example, reception staff, opening hours) may account for some variation.
For example, SNPs in the KLK3 promoter may account for individual variation in serum prostate-specific antigen levels and even cancer susceptibility (Tsuyuki et al, 1997; Xue et al, 2000; Cramer et al, 2003).
Synergistetes sp. for example, only recently gained attention [13] but may account for 3 11% of the bacterial population [14].
For example, acidification of the tumour environment by lactate may account for bFGF overexpression (D'Arcangelo et al, 2000).
They may account for discrepancies in the way antidepressants, for example, or chemotherapy agents work in different people.
Confusion may account for some of it.
