The phrase "at successive steps" is correct and usable in written English.
It can be used to describe a process or series of actions that occur in a sequence or progression.
Example: "The experiment was conducted at successive steps to ensure accurate results."
Alternatives: "in consecutive stages" or "at incremental phases".
Global gene expression analysis, at successive steps of the process that leads ES cells to neurons, provides further support for the similarities between the ES cell-derived rosette culture system and embryonic neural tube development, revealing in addition novel candidate genes that might regulate the processes of neural commitment and differentiation.
It is thus necessary to sample ovarian follicles from different females to obtain follicles at successive steps of development.
The agarose gel in Figure 3 shows the DNA products of one sample at successive steps of our procedure.
The comparative QPCR-based analysis was carried out during late oogenesis at successive steps of maturational competence acquisition in both species.
From these simulations we can calculate the front speed by tracking the position of the edge of the front of the virus at successive steps of time.
No studies have provided direct estimates of PMTCT service coverage over time since the implementation of PMTCT programmes at a local level, nor the coverage at successive steps of the cascade, despite the value of such data for service monitoring.
Accordingly, we introduce the concept of a reaction module to define at least two successive steps catalyzed by homologous enzymes in pathways alignable by similar chemical reactions.
It was treated at 30 °C in SO2 (C SO2 N2-30 C SO2 N2-30in two successive steps: first in SO2 atd then in H2S (C–SO2–H2S–N2-30 °Cand from room temperature to 900 °C in SO2 (C–SO2-900).
Each of the rats walked at least a thousand successive steps and successfully navigated rodent-sized stairs.
A series of experiments was constructed to digest the monazite sample with a low amount of concentrated H2SO4 and to explore the separation possibility of Th from REEs in successive steps at different BaCl2 weights that act as precipitating agent.
The samples were transferred to a freeze-substitution device pre-cooled to −90 °C, and were dehydrated in three successive steps: at −90 °C, −60 °C and −35 °C, for 8 h each, with the substitution medium being 2% uranyl acetate in a 10% methanol: 90% acetone mixture.
