"in two fold" is a correct and usable phrase in written English.
You can use it to indicate that something is doubled or that there are two distinct components to something. For example, "The project's success was due in two fold: hard work and dedication."
RHA contributes in two fold of effects in concrete or mortar; i.e. filler effect and pozzolanic effect.
In this model we use guanine frequency in two fold synonymous sites instead of GC-content of the genome as an independent variable.
Synergy tests were performed in 96-well microtiter plate containing two antimicrobial agents in two fold dilutions dispensed in a checkerboard fashion on the day of the assay.
Another feature of this model is that the rate of mutation A < − > G in the stop codons is identical to the rate of mutation A < − > G in two fold synonymous sites.
PEITC at concentrations of 200 μM to 12.5 μM (in two fold serial dilutions) was added to the media and the cells incubated for 7 minutes at 37°C.
Striatal B with different concentrations (0.04 to 20 μg mL−1, two fold dilution) was coated to the microtiter plate and then bound to pAbs with serial dilutions (1 50 to 1 6,400, stepwise in two fold dilution).
In a 96-well plate format, 10,000 cells per well were incubated at 37°C for 24 hours in four replicates per concentration tested in the presence of compound in two-fold dilutions starting at 75 µM.
All apoptosis assays were performed three times in two-fold.
Virus isolations were performed by inoculation of Vero-hCD150 cells or BLCL with PBMC or virus transport medium from swab samples in two-fold serial dilutions (eight replicates per dilution).
Toxicity tests employed a completely random design consisting of five or six metal treatments and a control group arrayed in two-fold serial dilutions.
Removing one of the two copies of the nuIs25[glr-1 gfp] transgene, which results in two-fold mRNA level differences that are detectable by real time PCR, does not suppress the GLR-1 accumulation observed in lin-10 mutants [31].
