The phrase "altered and unaltered" is correct and usable in written English.
It can be used to describe two states of an object, document, or data, indicating one version has been changed while the other remains the same.
Example: "The study compared the effects of the drug on altered and unaltered samples to determine its efficacy."
Alternatives: "modified and original" or "changed and unchanged".
The altered and unaltered rock samples were collected at Toki granitic rock, central Japan.
Both the altered and unaltered rock samples contain apatite, zircon and xenotime, which contain REEs as minor components.
Goddard's group found that both the altered and unaltered yeast grew at the same rate under non-stressful conditions.
Feusner's team is now enrolling patients for the next stage of the study: seeing how patients react to altered and unaltered pictures of themselves.
The western Tennessee HGM has the ability to differentiate altered and unaltered rivers based mainly on changes to hydrologic floodplain functions, although functional capacity index values were validated from independent measures.
Alteration zones as vectors to uranium ore may also be mapped via significant variations in conductivity, acoustic impedance and density between altered and unaltered formations.
Geological field observations evidence that active and fossil Icelandic hydrothermal systems are typically embedded into an intercalation of almost completely altered and nearly unaltered volcanic rock layers.
In this work, the retardation of sodium, calcium and strontium was studied on mica gneiss, unaltered, moderately altered and strongly altered tonalite using dynamic fracture column method.
Highly altered and dissolved K-feldspar grains can coexist in close proximity to unaltered grains, consistent with the understanding that variations in feldspar microtextures and feldspar composition exert control on their reactivity as demonstrated by Trevena and Nash (1981) and Parsons et al. (2005).
However, follicular development was not altered and oocyte maturation was also normal, which led to normal fertility with unaltered litter size in the mutant mice.
Carbon isotope data suggest that gases of E2s3 and most E2s2 are predominately unaltered, while those of E2s4 and several E2s2 mostly from Baimiao area are altered and undergoing strong dissipation.
