Whole cell ddPCR is a promising technique for the rapid and specific detection of foodborne pathogens. Alternative splicing is a key step in eukaryotic gene expression that allows for the production of multiple transcript and protein isoforms from the same gene. Even though splicing is perturbed in many diseases, we currently lack insights into regulatory mechanisms promoting its precision and efficiency. We analyze high-throughput mutagenesis data obtained for an alternatively spliced exon in the proto-oncogene RON and determine the functional units that control this splicing event. Using mathematical modeling of distinct splicing mechanisms, we show that alternative splicing is based in RON on a so-called "exon definition" mechanism. Here, the recognition of the adjacent exons by the spliceosome is required for removal of an intron. We use our model to analyze the differences between the exon and intron definition scenarios and find that exon definition prevents the accumulation of deleterious, partially spliced retention products during alternative splicing regulation. Furthermore, it modularizes splicing control, as multiple regulatory inputs are integrated into a common net input, irrespective of the location and nature of the corresponding cis-regulatory elements in the pre-messenger RNA. Our analysis suggests that exon definition promotes robust and reliable splicing outcomes in RON splicing. BACKGROUND The implications of the social contract for medicine and those it serves has been debated by bioethicists, political scientists, and physicians. Far less attention, however, has been given to dentistry's social contract. METHODS The existing literature from medicine is used to explore the social contract and the role of dentistry in today's society, focusing on several areas of interest. RESULTS The authors' analysis discusses the history of the social contract and its implications for professionalism. The authors examine the failure of the dental profession to adequately address population needs and inequities in oral health, situating this in the context of an increasingly commodified, commercialized, cosmetically oriented, and proprietary culture in the profession. The authors highlight the important role of organized dentistry in facilitating change and renewing the social contract. CONCLUSIONS The authors conclude that reforms are necessary for dentistry to remain a profession. PRACTICAL IMPLICATIONS The authors' findings may inform oral health policies and underscore the need for change among dental providers and organized dentistry to maintain dentistry's professional status. Being named in a medical malpractice case is one of the most stressful events in a physician's career. This article reviews the legal system and the medical malpractice process. It details the steps a physician experiences during a medical malpractice case, from being served to the deposition and then to trial and appeals if the physician loses. This article also reviews necessary steps to take in order to proactively participate in one's own defense. A careful history and thorough physical examination are necessary in patients presenting with acute neurologic dysfunction. Patients presenting with headache should be screened for red-flag criteria that suggest a dangerous secondary cause warranting imaging and further diagnostic workup. https://www.selleckchem.com/products/mln2480.html Dizziness is a vague complaint; focusing on timing, triggers, and examination findings can help reduce diagnostic error. Most patients presenting with back pain do not require emergent imaging, but those with new neurologic deficits or signs/symptoms concerning for acute infection or cord compression warrant MRI. Delay to diagnosis and treatment of acute ischemic stroke is a frequent reason for medical malpractice claims. Abdominal and extremity complaints are common in the emergency department (ED) and, because of their frequency, clinical vigilance is vital in order not to miss the timely diagnosis of occult or delayed emergencies. Such emergencies, if not timely managed, are sources of significant patient morbidity and mortality and may expose ED physicians to possible litigation. Each patient complaint yields to a nuanced approach in diagnostics and therapeutics that can lead physicians toward the ruling in or out of the correct high-risk diagnosis. This article discusses the approach and risk management of this high-risk subset of abdominal and extremity diagnoses. Nontraumatic chest pain is a frequent concern of emergency department patients, with causes that range from benign to immediately life threatening. Identifying those patients who require immediate/urgent intervention remains challenging and is a high-risk area for emergency medicine physicians where incorrect or delayed diagnosis may lead to significant morbidity and mortality. This article focuses on the 3 most prevalent diagnoses associated with adverse outcomes in patients presenting with nontraumatic chest pain, acute coronary syndrome, thoracic aortic dissection, and pulmonary embolism. Important aspects of clinical evaluation, diagnostic testing, treatment, and disposition and other less common causes of lethal chest pain are also discussed. Violent, combative and intoxicated patients are a common problem in the emergency department, and the emergency physician must be prepared to control the situation safely and effectively when a patient begins to exhibit dangerous behavior. This article reviews initial de-escalation techniques to reduce the need for patient restraint. It then details the 2 types of restraints (physical and chemical) and the clear indications for each type. The high-risk nature of utilization of restraints is reviewed, as well as the means by which to ensure patient and staff safety and decrease adverse outcomes. Many patients with acute behavioral or mental health emergencies use the emergency department for their care. Psychiatric patients have a higher incidence of chronic medical conditions and are at greater risk for injury than the general population. Patients with acute behavioral emergencies may stress already overcrowded emergency departments. This article addresses high-risk areas of the treatment and management of emergency department patients presenting with behavioral emergencies. This article identifies methods successful in determining whether the patient's behavioral emergency is the result of an organic disease process, as well as recognizing other potential acute medical emergencies in this high-risk population.