Every year I teach a virology course to undergraduates and masters students at Columbia University. I record video and audio of each of the twenty-five lectures and release them on YouTube – so that not only the students but the rest of the world can learn about the amazing field of virology. With the spring …
Disease and death caused by influenza virus are greater in human females than in males. But disease is more common in males from birth through age 15, after which more females are affected. In mice, genetic variation in the Y chromosome controls susceptibility to influenza virus infection (link to paper). Increased susceptibility does not correlate …
Among the multitudes of eukaryotic viruses with DNA genomes, some replicate in the cell nucleus, while others avoid the nuclear bureaucracy and remain in the cytoplasm. But biology is not always so rigid: a new giant virus has been found that replicates in the cytoplasm, where it seems to recruit components of the nuclear transcription machinery …
The microbes that live on and in us provide a host of functions that are essential for our health. Changes in the composition of these microbial communities correlate with a variety of disease states. Results of a new study (link) reveal altered populations of intestinal bacteria and metabolic disturbances in ME/CFS patients. The study subjects were …
Viruses infect every living organism on the planet, but not every habitat has been explored for their presence. The igneous ocean crust had not yet been examined for viruses, but seek and ye shall find: there are plenty of viruses under the seas. The oceanic basement is an enormous ecosystem that lies at the bottom of …
When giant viruses were discovered – with genomes much larger than any previously seen – some suggested that they had descended from a fourth domain of life (the current three are bacteria, archaea, and eukaryotes). Part of the reason for such a claim was the finding of homologs of bacterial and eukaryotic genes, including molecules involved …
