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The exact protocol for lentiviral production will vary depending on the research aim and applied library. [35] [43] [44] If a two vector-system is used, for example, cells are sequentially transduced with Cas9 and sgRNA in a two-step procedure. [35] [44] Although more complex, this has the advantage of a higher titre for the sgRNA library virus ...
A 2010 study by Zhang, et al., demonstrated that researchers were able to detect pancreatic cancer with high sensitivity and specificity (90.0% and 95.0%, respectively) by screening saliva for four specific mRNA biomarkers. [40]
Prostate cancer screening is the screening process used to detect undiagnosed prostate cancer in men without signs or symptoms. [ 1 ] [ 2 ] When abnormal prostate tissue or cancer is found early, it may be easier to treat and cure, but it is unclear if early detection reduces mortality rates.
The 'worst-case' sensitivity or specificity must be calculated in order to avoid reliance on experiments with few results. For example, a particular test may easily show 100% sensitivity if tested against the gold standard four times, but a single additional test against the gold standard that gave a poor result would imply a sensitivity of ...
Sensitivity and Specificity: The low abundance of miRNAs in complex biological samples, such as blood, necessitates enhancing biosensor sensitivity to detect miRNAs at levels beyond femtomolar concentrations. Additionally, due to the high sequence similarity among miRNAs, improving the specificity of these biosensors is essential to ...
Medical studies show that prenatal screening cultures reduce the incidence of Perinatal Group B Streptococcal Disease. Studies of single institutions or health maintenance organizations show institutions with a culture-based screening policy have close to 90% of delivering women with documented GBS screening, and close to 90% of GBS-positive ...
Routine screening is not recommended for bladder cancer, [170] testicular cancer, [171] ovarian cancer, [172] pancreatic cancer, [173] or prostate cancer. [ 174 ] Recommends mammography for breast cancer screening every two years from ages 50–74, but does not recommend either breast self-examination or clinical breast examination . [ 175 ]
A microbiological culture, or microbial culture, is a method of multiplying microbial organisms by letting them reproduce in predetermined culture medium under controlled laboratory conditions. Microbial cultures are foundational and basic diagnostic methods used as research tools in molecular biology .