The phrase "at multiple checkpoints" is correct and usable in written English.
It can be used when referring to various locations or stages where verification or assessment occurs, often in contexts like security, project management, or quality control.
Example: "The project will be evaluated at multiple checkpoints to ensure it stays on track and meets all requirements."
Alternatives: "at several points" or "at various stages".
There were at least two bombings while we were there, and the police were stopping vehicles at multiple checkpoints throughout the region on several days.
At multiple checkpoints, police officers scan your ID card, your irises and the contents of your phone.
Armored cars traveling through the Baghdad red zone stopping at multiple checkpoints and opening doors at every checkpoint.
Once in the thymus, T cell progenitors proceed through a series of stages of cell proliferation and differentiation that are tightly controlled at multiple checkpoints associated with differential gene expression and regulation [13], [14].
This ultimately results in cell cycle arrest at multiple checkpoints.
The usually two-hour drive took six, and their car was stopped at multiple checkpoints.
There are multiple checkpoints at the entrances to shopping malls -- even at subway stations in this city.
In healthy individuals, the B cell repertoire is purged of potentially pathogenic autoreactive B cells at multiple developmental checkpoints; however, in SLE patients, many of these checkpoints are breached and autoreactive B cells become part of the mature, immunocompetent and activated B cell repertoire [2] [4].
Cell cycle is a highly regulated process with multiple checkpoints arresting cells at G1/S, intra S, G2/M, mitotic spindle assembly; either for DNA repair or sending cells to death pathways if the damage is extreme; or even forcing cells to enter quiescence by exiting cell cycle (G0 phase) during starvation.
There are now multiple checkpoints along the road between Iraq and Saudi Arabia.
It is unclear how the abductors could have transported them there at night, given that the military enforces a curfew between 6pm and 6am, and there are multiple checkpoints between Bafut and Bamenda.
