The phrase "an indicator of either" is correct and usable in written English.
It can be used when discussing something that serves as a sign or signal for one of two possible outcomes or conditions.
Example: "The sudden drop in temperature is an indicator of either an approaching storm or a change in the season."
Alternatives: "a sign of either" or "a signal of either".
A match in an alignment is not an accurate indicator of either purifying selection or functionality of that site, since non-functional sites under neutral evolution can remain unchanged by vertical inheritance or multiple/reverse mutation.
APTT is commonly used to test the intrinsic coagulation pathway, where a prolonged APTT is a clinical indicator of either a factor deficiency or the presence of coagulation inhibitors [4].
These results caution against using C4 plant abundance as a proxy indicator of either climate or pCO2 without an adequate understanding of key controlling factors.
The presence of GlcNAc on the surface of so many different cell types makes it a good indicator of either the presence of other organisms or potentially an attack on the outer surface of a cell.
A binary indicator of either high or low vulnerability was assigned to each BDA in the training dataset based on whether the observed 95th percentile radon measurement was greater or less than each concentration threshold.
This might be due to limited sequencing of eukaryote genomes, or an indicator of HGT from either bacteria or archaea.
Less than one-third (13) of the studies reported an indicator of referral, either the proportion of patients referred to a health facility 15, 18, 27, 30, 34, 35, 38, 39, 41, 43, 45, 46 and/or the proportion that completed their referral (i.e., those who attended a health facility after being referred there by a CHW).
This is either an indicator of coming inflation or, says Stephen Roach of Morgan Stanley, a terrific buy signal for bonds.
The user can choose to compute IRI-PLAS-TEC, -foF2, -hmF2 or the W-index (an indicator of ionospheric disturbance) by assimilating either one-hour time resolution UHRG GIM or two-hour time resolution JPL GIM.
Inactive lever-pressing can be interpreted as either an indicator of general activity or as an expression of the animals' exploratory strategy; that is, how often they check the 'other lever' to see if reward contingencies have changed.
