Related Experiment Video
Updated: Jul 12, 2026

Proofreading and DNA Repair Assay Using Single Nucleotide Extension and MALDI-TOF Mass Spectrometry Analysis
Published on: June 19, 2018
Insights
A correction is issued regarding a figure in a study on genetic factors influencing atrial natriuretic peptide and hypertension. The figure shows misaligned size bars in a Southern blot analysis.
Area of Science:
- Genetics
- Cardiovascular Physiology
- Molecular Biology
Background:
- The study investigates the relationship between atrial natriuretic peptide (ANP) levels and salt-sensitive hypertension.
- Genetic factors are implicated in the regulation of ANP and blood pressure.
- Previous research highlights the role of ANP in cardiovascular homeostasis.
Purpose of the Study:
- To report a figure correction for a study on genetic influences on ANP and hypertension.
- To ensure accurate representation of Southern blot data.
Main Methods:
- Southern blot analysis was used to assess genetic variations.
- Data visualization and figure preparation were conducted.
Main Results:
- A specific figure (ID, p. 680) in the report contains misaligned size bars.
- The misaligned bars are in relation to dark bands on the Southern blot.
Conclusions:
- The correction ensures the integrity and accurate interpretation of the study's findings.
- Precise data presentation is crucial for understanding genetic links to hypertension.
Abstract:
In figure ID (p. 680) of the report "Genetic decreases in atrial natriuretic peptide and salt-sensitive hypertension" by Simon W. M. John et al. (3 Feb., p. 679), the size bars to the right and left of the Southern blot were not correctly aligned in relation to the dark bands.
Related Concept Videos
Distance Corrections
NMR Spectrometers: Resolution and Error Correction
Accuracy, limits, and approximation
Accuracy is defined as the closeness of the measured value to the true or actual value. In engineering mechanics, repeated measurements are taken during theoretical or experimental analyses to ensure that the result is precise and accurate.
The accuracy of any solution is based on the...
Types of Errors: Detection and Minimization
Absolute error in a measurement is the numerical difference from the true or central value. Relative error is the ratio between absolute error and the true or central value, expressed as a percentage.
Errors can be classified by source, magnitude, and sign. There are three types of errors: systematic, random, and gross.
Systematic or...
Contaminants and Errors
Another key consideration is determining the appropriate number of samples required to...
Errors and Mistakes in Surveying

