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1.
Summary Following pretreatment of rats by 4-methyl-2-thiouracil the anti-inflammatory action of phenylbutazone on formalin edema is strongly diminuished.  相似文献   

2.
Summary A spectrophotometric method suitable for quantitative estimation of indole compounds is described. The correlation is discussed between this colour test, derived from the ?Keller-reaction?, and the ?Hopkins-Cole-reaction?.   相似文献   

3.
Summary InOligarces paradoxus, the chromosomal behaviour was compared during pedogenetic development of and . The -egg undergoes a single non-reductional maturation division, the -egg shows two divisions which result in reduced nuclei. After maturation in the -egg, the number of chromosomes is restored by endomitosis. The nuclei of germ-line cells contain a high number of chromosomes (: 74\2-82; : at least 58) in both sexes. In somatic nuclei, the number is diminished by elimination to 10 in , to 5 in .  相似文献   

4.
Summary The author demonstrates the possibility to realize on living human individuals big sizeautoradiographs afterintravenous injections of an artificial radioactive isotope of a relatively short activity. Strong preparations (100 millicuries) of radiozinc (Zn63) in form of soluble oxide have been employed. These injections were performed on two patients suffering from general carcinosis. The humanauto-organographs (autohepatographs, automammographs, autonephrographs, etc.), as well as theautoangiographs of the blood vessels of the skin and the subcutaneous tissues, thus realized for the first time, are quite interesting. The possibilities of a clinical utilization of such autoradiographs are briefly discussed.  相似文献   

5.
Summary The methods of modern statistics are of great value in developing a new biological test. The advantage of the statistical design is demonstrated by experiments on the germination of pollen grains and spores of fungi.  相似文献   

6.
Summary Addition of polyelectrolytes, in particular of the sodium salt of carboxymethylcellulose, makes it possible to obtain for the use in artificial kidneys dialyzing liquids which are in thermodynamic equilibrium with blood, both with respect to salts and water, or which even permit removal of water from the blood, as well as urea and related substances (the dialyzing liquid being at will hypertonic with respect to blood), the salt content of blood remaining in all these cases unaffected. These dialyzing liquids might be particularly useful for cases combined with oedema.

Vorgetragen am Kongress der «3o riunioni medico chirurgiche internazionali», Turin 1957; erste Mitteilung hierüber im VortragvonW. Kuhn am Staffmeeting des Bürgerspitals Basel am 2. Februar 1955.  相似文献   

7.
8.
Summary If certain hybrids ofPlatypoecilus maculatus andXiphophorus helleri (viviparous platyfish and swordtails) are cultivated in diluted sea-water (0.25 or 0.5% salt concentration), the amount of free amino acids increases and the growth of macromelanophores, which normally only form certain black spots at the dorsal fin, is accelerated. Therefore melanomas arise. After changing salt water for fresh water, growth of macromelanophores remains accelerated. The same effect is seen in progenies which have been in an oocytic or embryonic state, when their mother was cultivated for some weeks in diluted sea-water (Figures 1 and 2). A similar effect has been observed in plant galls produced byPhylloxera (Viteus vitifolii) in the genusVitis. When the parasite, which injects amino acids into the tissue of the host in order to produce galls, is removed, gall formation goes on slowly for some days. It is shown that a few hours after injection of amino acids—before formation of neoplasms begins—the concentration of ribonucleic acids is increased. RNS-(and therefore protein-)biosynthesis in neoplasms may be dependent on concentration of free amino acids. A simple concept for the formation of neoplasms in hybrids of platyfish and galls ofPhylloxera is discussed.

Den Herren Prof. Dr.G. de Lattin (Zoologisches Institut der Universität des Saarlandes) und Prof. Dr.B. Husfeld (Forschungsinstitut für Rebenzüchtung Geilweilerhof/Pfalz) sind wir für die Förderung dieser Arbeit zu grösstem Dank verpflichtet. Herrn Prof. Dr.C. Kosswig (Zoologisches Institut der Universität Hamburg) verdanken wir viele Anregungen und die freundliche Überlassung von ingezüchteten Stämmen für unsere Fischkreuzungen. — Mit Unterstützung durch die Deutsche Forschungsgemeinschaft.  相似文献   

9.
Résumé Chez des chenilles de macrolépidoptères, après des implantations dans la région thoracique on a obtenu: 1o une durée de développement postopératoire plus longue (Saturnidés et Sphingidés), ou plus courte que la normale (Nymphalidés et Sphingidés); 2o des chenilles qui ne muent plus (Saturnidés) où ont une mue supplémentaire, 3o des chenilles qui ne se chrysalident qu'en partie (Saturnidés et Nymphalidés). — Dans plus de 30 cas les pattes de la chrysalide se formèrent à côté des pattes de la chenille, qui ne se résorbèrent pas.  相似文献   

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