The phrase "a control and a" is grammatically correct and can be used in written English.
It can be used when referring to multiple items or concepts, specifically mentioning a control and another item in a list or comparison.
Example: "In the experiment, we used a control and a variable group to measure the effects of the treatment."
Alternatives: "a control and another" or "a control along with a".
Each child wrote a control and a HARRY assisted story.
In each village, there will be a control and a treatment group.
We recruited 1,800 women from low-income Lusaka neighborhoods who were served by a large government clinic and randomized them into a control and a treatment group.
As an example of application, we apply our theorem to a control and a Cauchy problem for quasi-linear perturbations of KdV equations, improving the regularity of a previous result.
The problem is formulated as an infinite-horizon optimal adaptive learning problem, and we are able to simultaneously address the issue of designing a control and a triggering mechanism with guaranteed optimal performance by design.
In addition to retrospective studies involving the historical period 1964 1993, system simulations were performed for the future period 2001 2030, under a control and a 1% greenhouse-gas-increase scenario.
The presence of K10 staining in the A-CYLDWT cells and its absence in both, A-control and A-CYLDC/S cultures, confirmed their more differentiated phenotype.
Low levels of expression of keratins K10 and K1 –reliable markers of well-differentiated tumors– were noted in A-control and A-CYLDWT SCCs, and they were not detected in A-CYLDC/S carcinomas.
Keratin K8, a marker of malignancy in skin tumors showed extensive staining in both A-control and A-CYLDC/S carcinomas, while it was scarcely expressed in A-CYLDWT tumors.
Additionally, abundant dead cells were found in the supernatants of A-CYLDWT cells coincident with elevated levels of expression of the pro-apoptotic protein Bax, while low expression or absence of Bax were detected in A-control and A-CYLDC/S cells, respectively.
2C & 2D demonstrate an illustrative example of a control and an overstimulated mouse's travel pathway on the LDL.
