The phrase "a subsample of specimens" is correct and usable in written English.
It can be used in contexts involving research, data collection, or scientific studies where a smaller group is selected from a larger population for analysis.
Example: "In our study, we analyzed a subsample of specimens to determine the effects of the treatment on the overall population."
Alternatives: "a subset of samples" or "a smaller group of specimens".
A subsample of specimens was examined by dissection for the presence of parasite metacercariae, including Ribeiroia.
Allelic profiles for GP15, MutL and RepA loci were determined for all new wPip haplotypes and for a subsample of specimens for the known wPip haplotypes.
For a subsample of specimens, we also obtained partial sequences of two additional mtDNA markers: the NADH dehydrogenase subunit 2 (ND2, 1160 bp) and 5 (ND5, 1132 bp) (Additional file 1: Table S2).
The subsequent sequencing of ank2 and pk1 PCR products obtained from a subsample of specimens confirmed the observed RFLP profiles, with no double peaks (indicative of multi-infection) in electropherograms.
For a subsample of specimens, three additional Wolbachia markers were sequenced: the DNA mismatch repair protein gene MutL, the putative secreted protein gene GP15 (also called VrlC) and the regulatory protein gene RepA (Additional file 1: Table S2).
Geometric morphometric analysis was carried out on a subsample of specimens from Lough Ramor and Ross Lake, the same analyses could not be performed on fish from Leixlip Reservoir or Lough Corrib, as the lakes were sampled prior to Lough Ramor and Ross Lake digital images were not available for these fish.
Examination of a subsample of individual specimens (n = 40) revealed no evidence of Ribeiroia infection.
We analyzed a subsample of urine specimens for MMA3 and DMA3 but found no MMA3 and only trace amounts of DMA3.
To investigate the association between wPip groups and mtDNA variation, we sequenced the cytb gene (that have been shown polymorphic in the Cx. pipiens complex, see [ 14]) in a subsample of 184 specimens from 101 Cx. pipiens natural populations and 44 isofemale laboratory lines.
To address this potential bias we refined our analysis by restricting our analyses to a subsample of 113 specimens from 12 populations (encompassing populations of quinquefasciatus: populations 12, 63, 76, 78, 84 and 90 in Table S1, pipiens: 130 and 181, molestus: 114 and 131, pallens: 52 and 53) that were typed with microsatellite loci.
Performing polymerase chain reaction (PCR) testing on a subsample of these patients' specimens might have given an indication of what proportion of cholera and shigellosis cases were misclassified on this account.
