Micro-Analysis of Lithium by Isotope Dilution Method

Tubulin Determination by an Isotope Dilution-vinblastine Precipitation Method

BETH BURNSIDE, CHRIS KOZAK, and F. C. KAFATOS. From the Marine Biological Laboratory, Woods Hole, Massachusetts 02543 . Dr . Burnside's present address is the Department of Anatomy, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104 . Dr . Kozak's present address is the Department of Biology, Yale University, New Haven, Connecticut 06520 . Dr. Kafatos' present addr...

Isotope Dilution Residue Function

We analyzed the isotope dilution residue function from a single cardiac chamber for an arbitrary inlet distribution of tracer and arbitrary mixing within the chamber, and established a general relationship between cardiac output and the chamber residue function. In our experiments, we made simultaneous temperature measurements in three left ventricular chamber subregions of the dog subjected to...

Measurement of size and turnover rate of body glucose pool by the isotope dilution method.

Glucose uniformly labeled with Cl4 was administered intravenously in minute amounts to unanesthetized dogs in the postabsorptive state as an initial dose followed by a continuous infusion. The Cl4 content of the plasma glucose was determined at intervals. When the ratio of priming dose to infusion rate was suitable, the plasma glucose specific activity remained relatively constant during the 6o...

Accuracy of a fully enzymatic method for creatinine, as judged by isotope dilution-mass fragmentography.

Suitability and use of the N-isotope dilution method to estimate nitrogen ®xation by actinorhizal shrubs

Nitrogen ®xation rates were estimated by the N-isotope dilution method for Ceanothus velutinus and Purshia tridentata in the understory of central Oregon ponderosa pine forests. Field rates were measured in small pole-, large pole-, and sawtimbersized pine stands using two shrubs (Arctostaphylos patula, Ribes cereum) and one graminoid (Carex rossii) as non-®xing reference species. Shrub cover r...