Über die Isolierung von Pyrenophorol

Summary The isolation of patulin I and pyrenophorol II from submerse cultures ofByssochlamys nivea Westling is described.     

The H2O2-production by polymorphonuclear leucocytes during phagocytosis

Riassunto Si può dimostrare un accumulo di H₂O₂ in leucociti polinucleati di essudato di cavia o di sangue umano durante la fagocitosi in presenza di KCN 2 mM. La produzione di H₂O₂ e l'attività della perossidasi si considerano importanti per l'azione battericida.     

X-ray research of polycrystals. X-ray diffraction methods for precision determinations of polycrystal lattice parameters over unsolved double lines

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Special forms of amitotic nuclear division in striated muscle and other insect tissues

Résumé On décrit quelques aspects morphologiques de l'appareil nucléaire des fibres musculaires striées des insectes. Le nom Polykaryonéma est proposé pour désigner les noyaux filamenteux géants qui par fragmentations successives produisent des chaÎnes de noyaux indépendants, placées dans le centre des fibres musculaires adultes. Ce phénomène offre un bon exemple de division nucléaire amitotique.     

Effects of anaesthesia and chronic catheterization on circulating levels of prostaglandins (PGE2 and PGF2a in dogs

Summary Chronic catheterization of aorta and inferior vena cava in dogs did not significantly affect circulating levels of prostaglandins (PGE₂ and PGF_2a ). Pentobarbital (30 mg/kg i.v.) anaesthesia produced a significant decrease in PGF_2a .This work was supported by INSERM (grant No. 76.5.183.5).We wish to thank Miss Laure Eloy and Mrs Annick Soubrier for their technical assistance.