The phrase "at either stage" is correct and usable in written English.
It can be used to refer to two distinct points in a process or timeline, indicating that something applies to both stages.
Example: "The results of the experiment were inconclusive at either stage of the testing process."
Alternatives: "at both points" or "at any stage".
Just 18% of lung cancer cases recorded in 2011 were caught early, at either stage 1 or stage 2, the research shows.
No artifact was observed in C1 at either stage.
Starting in 2011, the tax-free amounts available during life and at death are expressed as a total, and it is possible to use this $5 million exclusion to transfer assets at either stage or a combination of the two.
Both stages of the secret recording process - the recording and the broadcast - are always assessed separately to ensure that any infringement of privacy, at either stage, is editorially justified by the public interest it serves.
The lifetime gift tax exclusion (also called the lifetime exemption) and the estate tax exclusion are expressed as a total amount and it is possible to use this basic exclusion (sometimes called the "unified credit") to transfer assets at either stage or a combination of the two.
The results showed that beamforming at either stage can strongly enhance the performance of the multi-functional transmission, but a suitable selection of the relays is necessary to guarantee the least possible mismatch between the DOA from BS to relays and the DOA from BS to destination.
Only subjects who had participated both at baseline (either stage 1 or 2) and follow-up (stage 3) were included in the present analysis.
By nature, Inflammatory Breast Cancer is diagnosed at a late stage, either Stage III or IV, as the cancer has already invaded the skin.
Experiment GSE21868 examined expression in a range of tissues and organs: roots (R); leaves (L); outer stem tissues at either the vegetative stage (SOV) or green capsule stage (SOGC); inner stem tissues at either vegetative stage (SIV) or green capsule stage (SIGC); and seeds 10-15 days after flowering (DAF; E1), 20-30 DAF (E2), and 40-50 DAF (E3) [ 33].
Three diets contained 10.7 kg dry matter (DM) concentrate, 4 kg DM grass silage, and ad libitum access to WCBS harvested at either the heading stage (B1), the early milk stage (B2) or the early dough stage (B3) of maturity.
Genetic ablation of Sin1 in B cells reduces the cell size at either the transitional stage or upon antigen stimulation and severely impairs metabolism.
