The phrase "a levels of" is not correct in English.
Did you mean "levels of"? You can use "levels of" when discussing different degrees, stages, or amounts of something.
Example: "There are various levels of difficulty in this game, catering to both beginners and experts."
Alternatives: "a range of" or "various degrees of".
The work paid off; in 1990, Thome hit.340 and totaled 16 home runs and 50 RBIs playing at both the Rookie and Class A levels of the minor leagues.
A: Levels of VEGFR-1 and VEGFR-2 were compared using real-time qPCR in RGC cultures.
Table 2 shows the proportion of respondents exposed to high ≥5BA) and low (< 55dB(A)) levels of noise exposure from both sources.
a Levels of OVA-specific IgG1 and IgE in the plasma were evaluated by ELISA.
a Levels of gene expression were analyzed by semi-quantitative PCR analysis; data provided are representative ultraviolet-illuminated bands following electrophoresis in ethidium bromide-stained agarose gels.
One of the earliest reports of a Levels of evidence (LOE) hierarchical system was published in 1979 by the Canadian Task Force on the Periodic Health Examination (Burns et al. 2011; Canadian Task Force on the Periodic Health 1979).
So: is it grade-A levels of basic to imply that the overarching message of Mad Men is to take a leap of faith (à la opening-credits guy) because, for the most part, there's always hope? Probably.
But since we did not investigate the SP-A levels of the patients which harbor S. agalactiae, this is only a speculation that may be the target of further investigations.
Reduction in the SP-A levels of the alveolar lining fluid, as has been reported in bacterial pneumonia, adult respiratory distress syndrome and CF [38] [40], may play a role in the susceptibility to pulmonary microbial colonization and infection.
Unlike VEGF-A, levels of PEDF mRNA after rhBMP-4 treatments were not significantly different from those of controls.
PlGF in particular has been shown to act in concert with VEGF-A to promote pathological angiogenesis, vascular leak and inflammation [ 8, 11, 18, 74], and like VEGF-A, levels of PlGF are elevated in the eyes of patients with diverse ocular vascular diseases, including wet AMD [ 15, 75].
