Reduced foetal calcium without skeletal malformations in rats following high maternal doses of a strontium salt

Zusammenfassung nachweis, dass hohe Strontiumkonzentrationen die Kalzifikation der, Knochen neugeborener Mäuse, und diejenige in Knochengewebskulturen hemmen. Im Gegensatz dazu und zu anderen knochenaffinen metallen wirkt Strontiumnitrat in Dosen von25, 50, 100 and 200 mg/kg, verabreicht während des 9. bis 19. Trächtigkeitstages, bei Ratten nicht teratogen.

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We are indebted to Mr.K. L. Murray of the Government Chemist's Laboratory for analyzing tissue samples by atomic absorption spectrophotometry. We are also grateful toDr. R. F. Crampton, Director of BIBRA, for his interest and advice in this work.     

Dépouillement automatique des enregistrements polygraphiques de sommeil

Summary Polygraphic recordings of human sleep are automatically analyzed by an original device, consisting of an analog component and a digital component (small computer). The device gives a minute by minute diagnosis of sleep stage, along with comments (artefacts) and numerical results for rapid and slow eye movements, muscle tone, heart and respiratory rates.     

Mannosidohydroxystreptomycin fromStreptomyces sp.

Riassunto Viene descritto l'isolamento e lo studio chimico della mannosidoossistreptomicina, presente, insieme con ossistreptomicina, streptidina e toiocamicina, nelle colture delloStreptomyces 86. Il nuovo antibiotico ed il suo diidroderivato presentano una attività antibatterica paragonabile a quella di streptomicina e di ossistreptomicina.     

Adrenal lipid and plasma corticosterone depletion after 7,12-dimethylbenz(a)anthracene administration to the albino rat

Zusammenfassung Fluorometrische Messungen zeigten eine Abnahme von Plasmacorticosterone (CCS). Die Bedeutung dieser Resultate für theoretische Aspekte der Karzinogenese wird diskutiert.