Invasion of Trypanosoma cruzi into host cells is impaired by N-propionylmannosamine and other N-acylmannosamines.

The etiologic agent of Chagas' disease, Trypanosoma cruzi, is widely distributed in South America, affecting millions of people with thousands of deaths every year. Adherence of the infectious trypomastigote to host cells is mediated by sialic acid. T.

College weight gain and behavior transitions: male and female differences.

College-student weight gain has been well-documented. However, little is known about the sex differences in weight gain and related behaviors during the transition to college. A repeated-measure study design was used to reveal measured weight changes from October to December 2005 among male and female college students.

Factors and selenocysteine insertion sequence requirements for the synthesis of selenoproteins from a gram-positive anaerobe in Escherichia coli.

Selenoprotein synthesis in Escherichia coli strictly depends on the presence of a specific selenocysteine insertion sequence (SECIS) following the selenocysteine-encoding UGA codon of the respective mRNA. It is recognized by the selenocysteine-specific elongation factor SelB, leading to cotranslational insertion of selenocysteine into the nascent polypeptide chain. The synthesis of three different selenoproteins from the gram-positive anaerobe Eubacterium acidaminophilum in E.

Media coverage of Y2K: content analysis from a single newspaper, 1997 to 2000.

Content analysis of 258 Year 2000 Y2K-related artides published in a statewide newspaper between 1997 and 2000 indicated topics covered and changes over this three-year period leading up to 2000.

A model of consumers' risk perceptions toward recombinant bovine growth hormone (rbGH): the impact of risk characteristics.

This study estimates the effect risk characteristics, described as outrage factors by Hadden, have on consumers' risk perceptions toward the food-related biotechnology, recombinant bovine growth hormone (rbGH). The outrage factors applicable to milk from rbGH treated herds are involuntary risk exposure, unfamiliarity with the product's production process, unnatural product characteristics, lack of trust in regulator's ability to protect consumers in the marketplace, and consumers' inability to distinguish milk from rbGH treated herds compared to milk from untreated herds. An empirical analysis of data from a national survey of household food shoppers reveals that outrage factors mediate risk perceptions.