Background & aims: Studies on the early steps in the life cycle of hepatitis B virus have been
hampered by the lack of readily available target cells. In this study, we mapped a defined
virus attachment site to primary hepatocytes that is essential for infection. Methods: We used …

The susceptibility of the tree shrew Tupaia belangeri to human hepatitis B virus (HBV) has
been demonstrated both in vivo and in vitro. In this study, we show that purified HBV infects
primary T. belangeri hepatocyte cultures in a very specific manner, as detected by HBV …

A liquid control system is provided for an automatic washer which responds to a user's
inputs of fabric type, desired temperature and additives required, to introduce into the tub of
the washer an optimum volume of liquid to wash a clothes load in the tub, the average …

Casein micelles of different composition were synthesized in various ways and their sub-
structure was investigated with the electron microscope by means of thin sections. Earlier
studies of Schmidt et al.(1974) using the freeze-fracturing technique had shown no …

Total cross sections for the excitation by electron impact of the 2 3 S and 2 1 S states of
helium are measured in the 19–24 eV energy range. Several shape resonances are
observed. An estimate for the 2 3 P cross section is presented. Close-coupling calculations …

Electronic excitation by low-energy electron impact has been studied for water and for
methanol. In the case of water a triplet excitation process was observed at 7.2 eV energy
loss while for methanol probably a similar process was found at 6.5 eV. The weak and broad …

The impact of salt delivery in mouth on salt perception was investigated. It was hypothesized
that fast concentration changes in the delivery to the receptor can reduce sensory
adaptation, leading to an increased taste perception. Saltiness ratings were scored by a …

An automatic temperature control for automatic washers is provided which minimizes the
cycling of the water inlet valves to a maximum of two cycles each during the fill process. A
predetermined volume of water from a first inlet line is admitted for measuring the …

Reveille'hybrid bluegrass (Reg. no. CV-53, PI 603946) is an [F. sub. 1] hybrid between
Texas bluegrass (Poa arachnifera Tort.) and Kentucky bluegrass (P. pratensis L.) developed
by the Texas Agricultural Experiment Station (TAES) and released in April 1998. It has heat …

A process for solvent casting acrylic films having superior properties by casting a solution
comprising an organic solvent and a polymer system of one or more acrylic polymers onto a
carrier, removing the solvent thereby forming the film on the carrier, and stripping the film …