[Reproduction of interference shapes in crystals with one optical axis].
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Crystallography↗
Biomedical subjects
D Pohl
Publications and source records attributed to D Pohl.
[Influence of bromouracil on mutation induction and inactivation by UV and x-rays in the phage kappa].
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Bacteriophages↗
Endoscopy and biopsy in gastroesophageal reflux in infants and children.
The clinical features of abnormal gastroesophageal reflux in infants and children extend beyond repeated vomiting and include dysphagia, pain, bleeding, failure to thrive, esophageal stricture, and recurrent respiratory symptoms including aspiration pneumonitis and cyanotic attacks. The unreliability of the traditional barium swallow examination as a diagnostic test is well known. This study reports the results of endoscopic assessment and esophageal biopsy in 100 infants and children and relates them to the clinical findings and the changes in the contrast esophagogram. The results show that further valuable diagnostic information can be gained from endoscopic examination of the esophageal mucosa, especially when there is esophagitis with ulceration, bleeding, or stricture. Endoscopic biopsies are useful to confirm the presence of esophagitis but biopsies alone do not give absolute diagnostic information.
Adolescent↗
In vitro translation of natural mRNAs in a cell-free system containing components from interferon-treated chicken fibroblasts and factor preparations from mouse ascites cells or rabbit reticulocytes.
The effect of interferon has been studied in a mixed cell-free protein synthesizing system. Hemoglobin (Hb) and Encephalomyocarditis virus (EMC)-RNA can be efficiently translated in vitro in a system containing S-30 lysates or run-off ribosomes from primary chick embryo fibroblasts (CEF) and a postmicrosomal supernatant from mouse ascites cells or a ribosomal-wash preparation from rabbit reticulocytes. Ribosomes prepared from CEF pretreated with high doses of homologous interferon (500 units/ml) were able to translate Hb-RNA in the presence of heterologous factors with the same efficiency as ribosomes prepared from control cells. Translation of EMC-RNAP WAS SLIGHTLY Reduced if ribosomes from interferon-treated cells were used in the mixed cell-free system, confirming previous reports. No inhibitory effect caused by interferon treatment of CEF cells could be detected on in vitro translation of natural mRNAs if the cells had, in addition to interferon treatment, been infected with vaccinia virus. Possible reasons for the different observations made with out cell-free protein synthesizing system from CEF and with cell-free systems prepared from mouse cells are discussed.
Animals↗