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Related Concept Videos

Genetic Screens02:46

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Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
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Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
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The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
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In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
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Related Experiment Video

Updated: Feb 9, 2026

Pharmacophore Modeling for Targets with Extensive Ligand Libraries: A Case Study on SARS-CoV-2 Mpro
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Border screening for SARS in Australia: what has been learnt?

Gina Samaan1, Mahomed Patel, Jenean Spencer

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Australian border screening for severe acute respiratory syndrome (SARS) identified few symptomatic travelers. Enhanced traveler education and objective screening measures are recommended to prevent disease importation.

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Area of Science:

  • Public Health
  • Infectious Disease Epidemiology
  • Border Security

Background:

  • Severe Acute Respiratory Syndrome (SARS) posed a significant global health threat in 2003.
  • Effective border control measures were crucial to prevent the importation and spread of infectious diseases.

Purpose of the Study:

  • To evaluate the efficacy of Australia's border entry screening program in detecting travelers with SARS symptoms.
  • To identify limitations in the screening process and inform future public health strategies.

Main Methods:

  • A descriptive study analyzed screening outcomes at Australian airports and seaports from April to June 2003.
  • Data on screened arrivals, symptomatic individuals (Australian Quarantine and Inspection Service), and SARS investigations (Australian SARS Case Register) were collected.

Main Results:

  • Out of 1.84 million arrivals, 794 were referred for screening.
  • Four travelers met the WHO SARS case definition but were not confirmed cases.
  • One probable SARS case, symptomatic on arrival, was missed by border screening.

Conclusions:

  • The low detection rate was linked to low SARS prevalence, exit screening in affected countries, and subjective screening methods.
  • Future screening should prioritize traveler education, particularly for high-risk groups (elderly, chronically ill).
  • Objective screening measures are essential during outbreaks to prevent disease importation.