This paper reports a case of prolonged bleeding following application of leeches to treat chronic pain. The paper discusses the characteristics of the wounds and possible complication of prolonged ...

Chemosynthetic symbioses between bacteria and marine invertebrates were discovered 30 years ago at hydrothermal vents on the Galapagos Rift. Remarkably, it took the discovery of these symbioses in the ...

From comparison of the eyes of lampreys and jawed vertebrates, it is clear that a 'vertebrate-style' camera eye was already present in the last common ancestor of these taxa, around 500 million years ...

Animal kingdom classification is an important system for understanding how all living organisms are related. Based on the Linnaeus method, species are arranged and grouped based on shared ...

The aim of the present study was to investigate the effect of dredging activities on the structure of the macrobenthic community of a port complex in São Luís do Maranhão (2°S, Brazil). Sampling was ...