Sentence examples for been observed only once from inspiring English sources

A similar finding had been observed only once before — in people with AIDS.

In the third strategy, we excluded all the nucleotide variants which had been observed only once (singletons) among the 61 human SARS-CoV sequences reported in [ 25].

How many 7-mers have been observed only once in the positive set (and would be missed if only half of that set were used for training)?

He detected a specifying variable in the pretest, which, to our knowledge, has been observed only once in the study of dynamic touch (Withagen & Michaels, 2005, Experiment 1, Participant 5).

In addition, another 95 of ∼1100 potential gene targets that had been observed only once in our screens were identified in one or more of these previously published influenza siRNA screens (Supplementary Table S1).

In fact, some MSG genes were observed numerous times while others were observed only once.

A positive scratch response has been associated with teeth grinding and pruritus in classical scrapie [ 2]; teeth grinding was observed only once in case 05/377 during the observation and thus may not be significant.

In 59 0.4-ha plots, we found 99 biotic crust lichen species, one-third of which were observed only once.

However, on the two MLQSAR targets with a wide distribution of potency values, this behavior is observed only once.

After DOY 305, EPB is observed only once by EAR on DOY 324, on which the R-T growth rate is relatively high.

For example, the Chrysler 300M is ranked 14, with 33 thefts in 2003 04, but was observed only once in the 1,825 cars identified in street surveys (survey rank = 224).