Small ruminant lentiviruses (SRLV = maedi-visna in sheep and caprine arthritis encephalitis
in goats) are distributed throughout most countries of the world, particularly Europe. …

The species sensitivity distribution (SSD) is a statistical approach that is used to estimate
either the concentration of a chemical that is hazardous to no more than x% of all species (the …

The diagnosis of perinephric abscess is difficult. As a consequence, major errors in management
occur which result in greater than necessary mor-tality. Since the majority of reports on …

Biological responses to climate change have been widely documented across taxa and
regions, but it remains unclear whether species are maintaining a good match between …

This pamphlet outlines the development and operation of Athenian democracy to the end of
the fifth century BC. Separate sections examine the prelude to democracy, the emergence of …

Mangrove forests provide many ecosystem services but are among the world’s most
threatened ecosystems. Mangroves vary substantially according to their geomorphic and …

Increasing production and application of nanomaterials raises significant questions
regarding the potential for cellular entry and toxicity of nanoparticles. It was observed that the …

The success of vaccination programs depends largely on the mechanisms used in vaccine
delivery. National immunization programs offer childhood vaccines through fixed and …

Background The expansion of childhood vaccination programs in low and middle income
countries has been a substantial public health success story. Indicators of the performance of …

Precisely how long ago the Chinese began to export their silk westwards along the trade routes
of Central Asia we do not know. Ezekiel seems to have been familiar with silk, and Isaiah …