Humankind's remotest relative is a very rare micro-organism from south-Norway. The discovery may provide an insight into what life looked like on earth almost one thousand million years ago.

I WAS interested in Mr. T. Goodey's letter under the above heading in NATURE of March 13, but should like to make a few remarks thereon. Hay infusion, which Mr. Goodey states caused the excystation of ...

Dr. Paul B. Weisz, a 28-year-old refuges from Austria now serving as assistant professor of biology at Brown University, Providence, R.I., has discovered what may roughly he termed a third ...

Mice infected with the common gut parasite Tritrichomonas muris are at an increased risk of developing inflammatory colitis, new research shows. These findings expand the type of gut-resident ...

4 Laboratory of Genetics, Immunology and Human Pathologies, Faculty of Sciences of Tunis, El Manar University, 2092 Tunis, Tunisia 5 Molecular Modeling Unit, Pasteur Institute of Tunis, 1002 ...

Seemingly innocent microorganisms may have harmful consequences: Ubiquitous waterborne protozoa appear capable of aiding the survival of several types of bacteria responsible for gut-wrenching food ...

IN the interesting letter by Mr. A. H. Drew, under the above heading, in NATURE, February 20, it is suggested in the last paragraph that certain substances called auxetics which caused the development ...