The phrase "a upstream" is not correct in written English.
The correct form would be "an upstream" since "upstream" begins with a vowel sound.
Example: "The river flows in an upstream direction during the rainy season."
Alternatives: "an upstream flow" or "an upstream movement."
Four factors which govern wind-driven rain are investigated in this work: (a) upstream unobstructed wind conditions, (b) the rainfall intensity, (c) the probability distribution of raindrop sizes, and (d) the local flow patterns around the building.
RNA polymerase II processivity was calculated from relative Ct values of primer pairs A (upstream) and B (downstream) according to pre-mRNA ratiodistal/proximal = 2 CtA – CtB).
Additionally, in a novel application of ASO-In411 and tsRNAEX4 co-delivery targeting a upstream SMN intron 3 exon 4 splicing context produced enhancement of basal trans-splicing.
But the 3'splice sites on either site of the fusion are in line with the conserved consensus sequence and a upstream region known as the polypyrimidine tract (Figure 9a,b).
(A ) Upstream sequence of the of the Six1/2 gene.
Perhaps, phosphorylation of AKT(T308) is a upstream prerequisite for the downstream phosphorylation on AKT S473).
Nogo-A upstream primer: 5′-CCTGCTCTCGGTGACTATCA-3′; Nogo-A downstream primer: 5′-GTAAACACCCACATCAACACT-3′; β-actin upstream primer: 5′-CTATCGGCAATGAGCGGTTCC-3′; β-actin downstream primer: 5′-TGTGTTGGCATAGAGGTCTTTACG-3′.
Fish samples were collected from an upstream, a midstream and a downstream site of the Yangtze River upstream of the TGD in May and September of 2004.
A CGI spanning both an upstream region and a gene body was split into an upstream CGI and a gene body CGI.
A bridge connects two different logical bus domains with an upstream and a downstream port.
The pGL3β vector also has an upstream poly A signal to block aberrant vector initiated transcription.
