Now showing items 21-30 of 212
Factors limiting microbial activities in soil. II: The effect of sulfur
(Springer-Verlag, 1961-12)
The only nutrient element other than nitrogen and phosphorus which limited microbial activity in a sandy soil was sulfur. The addition of extremely small quantities of MgSO 4 , ranging from 0.32 to 1.6 mg sulfur/100 g soil, ...
Cell migrations to the isocortex in the rat This work was supported by USPHS grant NB03861 and AEC Contract AT (11-1) 1201.
(Wiley Subscription Services, Inc., A Wiley Company, 1968-03)
Cells that took up tritiated thymidine (H-3T) at various periods of intrauterine and early infant life in the periventricular proliferative zone and migrated to form the isocortex in the rat were tracked autoradiographically ...
Die Beeinflussung des Thetarhythmus im Kaninchenhippocampus durch elektrische Reizung von Septum und Formatio reticularis
(Springer-Verlag, 1963-09)
Langsame rhythmische elektrische Reizungen der medianen Septumregion und der Formatio reticularis des Mittelhirns lösen im Hippocampus des Kaninchens evoked potentials aus, die in ihrer Konfiguration ähnlich sind und sich ...
Studies on the rate of spermatogenesis in Drosophila effects of X-rays and streptonigrin
(Springer-Verlag, 1965-03)
1. The rate of spermatogenesis in adult Drosophila melanogaster was measured by use of tritiated thymidine as a radioactive tracer. Three experimental groups existed: control, irradiated, and streptonigrin-treated males.
Electrophoretic variation in human serum ceruloplasmin: A new genetic polymorphism
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1967-09)
Through the application of a specific oxidase stain to results of starch gel electrophoresis of human serum, three different electrophoretic forms of ceruloplasmin—denoted CpA (fast), CpB (intermediate), and CpC (slow)—have ...
Asymmetric dehydration of galactarate by bacterial galactarate dehydratase
(Elsevier, 1964-10-14)
The blood supply of the rat mandible This investigation was supported, in part, by USPHS research grant DE-00895 from the National Institute of Dental Research, National Institutes of Health.
(Wiley Subscription Services, Inc., A Wiley Company, 1965-12)
The blood supply of the rat mandible was studied in 12 adult animals using four techniques. Eight animals were injected with a cinnabar, mercury, zinc oxide mixture (Teichmann's paste) for dissection and for cleared ...
Ossification of the femur in thyroxine-treated tadpoles of Rana pipiens
(Elsevier, 1969-11)
Tadpoles of Rana pipiens at Taylor-Kollros stage IX were treated by immersion in a thyroxine solution at a concentration of 6.25 x 10-8 M. Hindlimbs developed precociously, and alizarin-stained specimens showed that ...
The distribution of nerves in human primary teeth This study was supported in part by U.S.P.H.S. research grant DE 01604 from the National Institute of Dental Research, National Institutes of Health, Bethesda, Maryland and grant 695 of the H. Rackham Fund of the University of Michigan.
(Wiley Subscription Services, Inc., A Wiley Company, 1967-09)
Human primary teeth in the stages of late root formation, root completion and root resorption were impregnated with silver to allow study of the distribution of nerves in the pulp. Neural trunks composed of many individual, ...