PubMed · 9362957
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E Forslind. 1997-06-16. [Does coughing mean tuberculosis?].. https://pubmed.ncbi.nlm.nih.gov/9362957/
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There is a close functional relation between the aerodigestive tract and the upper gastrointestinal tract. The pharynx and larynx are involved in respiration, speech, and deglutition. This article reviews the effects of reflexes emanating from the pharynx and larynx on the esophagus and its sphincters, as well as the effects of reflexes emanating from the esophagus on the larynx. Principally, reciprocal reflexes within these 2 regions result in protection of the airway against aspiration from above and below, either by swallowed or refluxed material. However, other reflexes appear to facilitate reflux of gastric content into the esophagus and inhibit esophageal motor function.
The use of ultra-sensitive low copy number (LCN) DNA typing allows the analysis of picogram amounts of DNA. Trace evidence accidentally left at a scene of crime (SOC) by the investigating team may be inadvertently collected and analysed, potentially leading to spurious evidence being introduced into the criminal investigation. A series of experiments were undertaken to determine the extent to which an investigator could contribute to any DNA contamination of a scene of crime under different simulated activities. Further, the degree to which any contamination was reduced by the use of commercially available protective clothing was demonstrated. Precautions that should routinely be taken at a scene of crime to reduce the risk of DNA contamination are recommended.