Sentence examples for been observed less frequently from inspiring English sources
They have been observed less frequently in the Milky Way Galaxy because most of them have been hidden by the obscuring clouds of dust.
A number of studies have documented the ability of cyanobacteria to incorporate amino acids (Zubkov et al., 2003; Michelou et al., 2007), whereas uptake by eukaryotes has been observed less frequently (Kamjunke and Tittel, 2008; Znachor and Nedoma, 2009).
These signals have been observed less frequently, and in consequence our knowledge about them is less precise.
The trans-eQTLs have been observed less frequently than cis-eQTLs in humans and tend to display reduced effects on the regulated gene (Schadt et al. 2008).
Generally speaking, although many stove projects and programs have achieved a reasonable degree of adoption, their sustained use, maintenance, and replacement have been observed less frequently (Table 1).
In the current trial, the frequency of arterial embolic events was similar in both groups, although they have been observed less frequently among IDUs in earlier studies [ 13, 18, 26].
The distribution of other cardiovascular effects between those animals administered propofol versus inhaled agents tended to mirror observations with single-use propofol, with the exception of hypotension, which was observed less frequently than expected in the MDP maintenance groups in this study.
Vertigo and dizziness were observed less frequently, and they were not associated with accompanying symptoms.
Notice that artifacts are observed less frequently using SPM-P than SPM-A, and none was found in patients under 6 years old using SPM-P.
Acute toxicity in the form of a flu-like syndrome, neurologic side effects, neutropenia, and the need for platelet transfusions was observed less frequently in the low-dose group, as was the chronic fatigue syndrome.
