Sentence examples for a first barrier from inspiring English sources
They act as a first barrier against invading pathogens.
On the one hand, they represent a first barrier against infection by discouraging birds from perching on the top of the cactus columns.
In the "tolerance" mechanisms, deposition of Cd in the cell wall is a first barrier to restrict Cd movement by combining with composition of cell wall (Carrier et al. 2003; Choppala et al. 2014) (Table 2).
Initially, AMPs were characterized as effector molecules of innate immunity as they provide a first barrier of defence against microbial pathogens [4].
An essential feature of yeast and other fungi is their rigid cell wall, which serves as a first barrier to extracellular stresses [9].
A first barrier was that national ART programs were at the outset based on parallel LMISs.
"When four men in one race penetrate the 10m-a-second barrier, it is right to herald a new era – the era of power" Brasher had written of the 100m final in this newspaper.
A second barrier is a customs duty based on engine displacement.
Soldiers and the police held the crowd at a second barrier.
A second barrier is a lingering and misguided skepticism about the safety of nevirapine, especially in the South African government.
As a truck approaches, a knee-high metal barrier lowers, allowing the truck inside a walled-off area blocked on the other side by a second barrier.
