In the preceding paper I a class of hapten-binding lymphocyte receptor molecules was described which lack detectable serological determinants of conventional immunoglobufin constant domains but appear to carry heavy chain variable portions. These receptor molecules which we call the anti-lgfraction as well as receptor molecules expressing class-specific imunoglobulin determinants-the so-called ...

Patients with active systemic lupus erythematosus (SLE) had a decrease in a subpopulation of cells (fraction D) when peripheral blood lymphocytes were separated on a discontinuous Ficoll gradient. Preincubation of SLE cells at 37 degrees C for 30 min led to a marked decrease in this fraction, composed primarily of thymus-derived (T) cells. Supernates of such preincubations were found to cause a...

We present broadband properties of sources in the Chandra Deep Field-North (CDF-N) with known spectroscopic redshifts. The high luminosity and high redshift bins are dominated by typical quasars. The intermediate redshift (z ∼ 0.7− 1.5) and luminosity ranges (L0.5−8.0keV ∼ 10 42.5−43.5 erg s) show a mix of different source types, with the apparently absorbed objects in the majority. At the fain...

The absorption coefficient of natural waters, a, is defined as the fraction of monochromatic collimated light that is absorbed per unit of path length by an infinitesimally small volume of water (Preisendorfer, 1976). a depends on wavelength and is an inherent optical property, i.e. it depends exclusively on the characteristics of the optical medium and not on the geometric structure of the lig...

Labeled sulfur dioxide was found to be extensively absorbed by spinach (Spinacea oleracea L.) leaves. Labeled sulfides detected in leaf blades following fumigations with sulfur dioxide in light indicated that photoreduction of sulfur dioxide had occurred. Measurable proportions of this labeled sulfur was localized within the chloroplast fraction. Suspensions of isolated chloroplasts supplied wi...

Young bean plants (Phaseolus vulgaris) containing root-absorbed (45)Ca and (86)Rb were leached to determine the pathway and mechanism of cation loss by leaching. Calcium is leached from the exchangeable calcium fraction within the plant by a process of ion exchange and diffusion involving exchange sites both within the leaf and on the leaf surface. Leaching of cations is primarily a passive pro...

Editor’s key points † This study investigated the early pharmacokinetics of ropivacaine without additional vasoconstrictor given as a psoas compartment block (PCB). † Ropivacaine plasma concentrations were detected within 30 s after injections. † Maximum measured plasma concentrations were measured within the first 10 min, but stayed below toxic threshold. † As some fraction of ropivacaine is s...

Background Under field conditions, the development of crops depends on capacity of the canopy to intercept incident radiation and convert it into new biomass (Gifford et al. 1984). The amount of incident radiation intercepted depends on the leaf area index (LAI) and canopy orientation in space. The fraction of the incident photosynthetically active radiation (IPAR) that is absorbed by a canopy ...

We present a comprehensive theory describing the CW balance of heat and fluorescence powers in Nd:YAG and discuss the individual and total heat, fluorescence, and stimulatedemission fractions of the absorbed power, with or without stimulated emission, and as a function of the Nd doping density. values are presented for both CW and pulsed diode pumping. It is shown that heating due to multiphono...