During a study following a pneumonia outbreak in 1992, a microorganism growing in amoebae
and resembling a small Gram-positive coccus (Fig. 1A) was isolated from the water of a …

The largest known DNA viruses infect Acanthamoeba and belong to two markedly different
families. The Megaviridae exhibit pseudo-icosahedral virions up to 0.7 μm in diameter and …

Genes differentially expressed in different tissues, during development, or during specific
pathologies are of foremost interest to both basic and pharmaceutical research. “Transcript …

We recently reported the discovery and preliminary characterization of Mimivirus, the largest
known virus, with a 400-nanometer particle size comparable to mycoplasma. Mimivirus is a …

Background The right sampling of homologous sequences for phylogenetic or molecular
evolution analyses is a crucial step, the quality of which can have a significant impact on the …

Ten years ago, the discovery of Mimivirus, a virus infecting Acanthamoeba, initiated a
reappraisal of the upper limits of the viral world, both in terms of particle size (>0.7 micrometers) …

Although protists are critical components of marine ecosystems, they are still poorly
characterized. Here we analysed the taxonomic diversity of planktonic and benthic protist …

The confirmation that there might be fewer than 30,000 protein-coding genes in the human
genome is one of the key results of the monumental work presented in this issue of Science …

Were you always curious about biology but were afraid to sit through long hours of dense
reading? Did you like the subject when you were in high school but had other plans after you …

Acinetobacter baumannii is a species of nonfermentative gram-negative bacteria commonly
found in water and soil. This organism was susceptible to most antibiotics in the 1970s. It …