Germ cell colonization of gonads in experimental quail twin embryos (Coturnix coturnix japonica)]

At the same development stage, two Quail twin embryos from right and left halves of a blastoderm contain together as many germ cells as a normal embryol. These are asymmetricaly distributed between the twins as between the right and left genital ridges of control embryos.     

Effect of hormones on adenyl cyclase activity of rabbit mammary gland in vitro

Ovarian hormones namely beta-estradiol and progesterone were observed to stimulate the activity of adenyl cyclase of the mammary gland from pregnant rabbit in vitro, unlike the lactating tissue where it was inhibited. On the other hand, non-ovarian hormones like hydrocortisone, prolactin and insulin did not have a similar effect on this enzyme.     

Catecholamines and granular vesicles in adrenergic axons of the developing pineal body of the rat

Resumen Imediatemente después del nacimiento, las fibras adrenérgicas del cuerpo pineal del ratón, contienen solamente vesículas granulosas del tipo grande. Con dós dias, comienzan a aparecer las vesículas granulosas pequeñas; que son las que contienen nor-epinefrina. Se piensa que antes de ésta edad, la nor-epinefrina se localizaria principalmente en un compartimiento extra-vesicular.

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This material was presented at the meetings of the American Association of Anatomists, Kansas City, Missouri, 1967.     

Alterations of tryptophan metabolism induced by sleep deprivation

Zusammenfassung Es wird gezeigt, dass Schlafentzug die Ausscheidung der 5-Hydroxyindolessigsäure und der Xanthurensäure vermehrt und diejenige der Antranilsäure herabsetzt.     

Specific anti-antibody in transplantation

Zusammenfassung Durch ein immunologisches Dreieck-System (Hund-Kaninchen-Hund) wurde ein Anti-Antikörper bei Hunden erzeugt und seine Wirkung in vitro und in vivo demonstriert. Die Anti-Antikörper-Methode bietet neue Möglichkeiten, dem Problem der Transplantat-Abstossung und der Therapie der Krankheiten immunologischen Ursprungs näherzukommen.

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This investigation was supported by Public Health Service grant No. CA 02624 and the Detroit General Hospital Research Corp. and Metropolitan Hospital Research grant NO. 208-12.