The phrase "absence of an entry" is correct and usable in written English.
It can be used in contexts where you are discussing the lack of a specific record or item in a list, database, or document.
Example: "The report highlighted the absence of an entry for the last quarter's sales figures, which raised concerns among the management team."
Alternatives: "lack of an entry" or "nonexistence of an entry".
In the absence of an internal ribosome entry site (IRES) upstream of HcRed, only EGFP will be translated from these transcripts.
In the absence of Ca2+ entry, a slight time-dependent lowering of Perceval fluorescence occurred, reaching statistical significance after 20 min (Fig. 4f).
This lack of induction certainly reflects the absence of sucrose entry into the cytoplasm of this mutant, thus preventing the alleviation of SuxR repression.
There were two alternative interpretations for the absence of pollen entry in Schmeissneria: one was that the pollen entry did not exist at all; the other was that the pollen entry had been obliterated.
The reaction proceeded very smoothly, and only 1 and 2 were observed, except for: 1) when the reaction was conducted in the absence of hydrazinium acetate (entry 4), where the MESNa thioester was the major product, and 2) in the absence of MESNa (entry 7), where significant deterioration in the quality of the sample was observed over time by LC-MS analysis.
Thus, Snf1 activation can occur in the absence of G1/G0 entry, and defects in Snf1 activation are unlikely to explain the failure of autophagy-deficient yeast to properly arrest in G1/G0 in response to nitrogen starvation.
Even in the absence of steam entry into the Steriset Container, heating to 180˚F in the washer/disinfector and to 270˚F for 15 minutes in the sterilizer would have been very effective in killing vegetative bacteria and viruses [ 2, 7].
(C ) Huh-7 cells transfected with hNTCP were infected with HDV similarly as in panel B in the presence or absence of HBV entry inhibitors: HBIG (hepatitis B immune globulin), Myr-59, and anti-HBsAg mAb, 17B9.
sum ^N_{i=1}p_{i}pi _{i}C_{i}=X end{aligned} (2 Since Tobin (1958), we know that, under the assumptions of the mean-variance model and in the absence of entry costs, investors will choose a combination of the safe asset and the portfolio of risky assets with the largest Sharpe ratio (the ratio of the average excess return to the standard deviation).
Control reactions demonstrated that the reaction did not proceed in the absence of a proton source (Table 1, entry 1), at low concentration of MeOH (Table 1, entry 2), with H2O as an alternative additive (Table 1, entry 5), and with a variety of SmI2 systems (Table 1, entries 6 8; see also the Supporting Information).
