Behe and Snoke [10] proposed models for simulating evolution of protein features that require multiple amino acid residues such as the case of disulphide bonds using a conceptually simplest route-point mutation system in duplicated genes.
qPCR was performed with an ABI 7300 Real-Time PCR System (Applied Biosystems) in duplicates or triplicates from at least three biological samples.
Concentrations for all markers determined via the Luminex100® system were obtained in duplicate; only concentrations with a coefficient of variation ≤ 0.5 were included.
Real-time PCR was performed using the SYBR Green Mix (Bio-Rad, Hercules, CA, USA) on the CFX96 Real-time System (Bio-Rad) in duplicate.
Each 100 pmol of 14 cDNA products were spotted onto nylon membranes (Hybond-N+, Amersham) with QArray systems (Genetix) in duplicates to eliminate potential non-specific single spot hybridization.
The levels of PlGF in the serum were assayed by a standardized sandwich enzyme-linked immunosorbent assay (ELISA) method (R&D Systems, Minneapolis, MN) in duplicate according to the manufacturer's protocol.
Performing a thorough reference method evaluation, testing blood glucose meter system and reference samples in duplicate, and control of elapsed time and glycolysis are important [ 2].
Reviewer access: http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi token=ftixhsoiemwgyfi&acc=GSE30070 Q-RT-PCR reaction was performed for miR-18a, miR-25, miR-1, and let-7g, and miR-486, using the miScript PCR system (QIAGEN, Valencia, CA) in duplicate reactions in a 96-well plate.
Plasma soluble E-selectin (sE-selectin) and soluble vascular cell adhesion molecule-1 (sVCAM-1) were measured by sandwich enzyme immunoassays (R&D Systems, OXON, U.K). in duplicate.
Vascular endothelial growth factor levels were determined by ELISA (R&D Systems, Minneapolis, MN, USA) in duplicate with 50 μl CSF per well and VEGF standard dilutions (15.6 2000 pg ml−1) as provided by the manufacturer.
