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. Role of the different isoforms of cyclooxygenase and nitric oxide synthase during gastric ulcer healing in cyclooxygenase-1 and -2 knockout mice.

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This case report is the first demonstrating an atypical symptomatic primary HIV-infection prior to seroconversion, which presented itself exclusively as an aphthous esophagitis with no symptoms of the classic acute retroviral syndrome. Therefore, each clinical suspicion of an underlying HIV-infection should be followed up carefully, even if the patient presents with unusual symptoms.

No abstract