The phrase "a occurred" is not correct in written English.
It is likely intended to convey that an event or incident took place, but the article "a" is improperly used here.
Example: "An incident occurred during the meeting that required immediate attention."
Alternatives: "an event took place" or "a situation arose".
Remarkably, Elansolid A occurred as two stable and separable atropisomers, A1 (1) and A2 (1*) (Jansen et al. 2011).
The game to win the group and thus play the second place team from Group A occurred between the U.S. and Mexico.
Twenty-nine of the 36 SARS cases (81%) at Hospital A occurred among clinical personnel with direct patient care or ancillary clinical roles.
Second, members of a national children's agricultural club who participated in activities in the county where Fair A occurred were interviewed about illness occurring in their households after attendance at Fair A and/or swine exposure.
For O-POB-dT, the major type of mutation was T → G followed by T → A, whereas for O-Me-dT, T → G and T → A occurred in equal frequency.
In the wild type strain, for O-Me-dT, both T → G and T → A occurred at approximately 9% frequency, but T → G was the dominant mutation at 37% compared to 12% T → A induced by O-POB-dT.
Recently, a series of outbreaks of foot-and-mouth disease virus (FMDV) serotype A occurred in many countries, including China.
Mapping the annual frequency of the secondary water type (Figure 12) gave a qualitative estimate of the area, where high concentrations of chl-a occurred during wet season conditions from 2006 to 2012.
Our experiments with several datasets showed an under-representation of poly-C, poly-G, and poly-T sequences at the read start – and in general compared to the reference genome – whereas the reverse complement of poly-T, namely poly-A, occurred well in the expected range.
Accumulation of the aurora-A occurred 6 hours after release from the aphidicholin block.
Of the two locus haplotypes comprised of HP CNV and HPR rs2000999, one, Hp1-A, occurred at very low frequency (0.6%).
