Cena interior

First Detection of Molecular Gas in the Shells of CenA ⋆

Shells are faint arc-like stellar structures, which have been observed around early type galaxies and are thought to be the result of an interaction. HI gas has recently been detected in shells, a surprising result in view of the theoretical predictions that most of the gas should decouple from stars and fall into the nucleus in such interactions. Here we report the first detection of molecular...

Influence of the incorporation of a cyclohexenyl nucleic acid (CeNA) residue onto the sequence d(CGCGAATTCGCG)

Cyclohexene nucleic acids (CeNA), which are characterized by the presence of a cyclohexene moiety instead of a natural (deoxy)ribose sugar, are known to increase the thermal and enzymatic stability when incorporated in RNA oligonucleotides. As it has been demonstrated that even a single cyclohexenyl nucleoside, when incorporated in an oligonucleotide, can have a profound effect on the biologica...

Letter to the Editor First detection of molecular gas in the shells of CenA

Shells are faint arc-like stellar structures, which have been observed around early type galaxies and are thought to be the result of an interaction. HI gas has recently been detected in shells, a surprising result in view of the theoretical predictions that most of the gas should decouple from stars and fall into the nucleus in such interactions. Here we report the first detection of molecular...

Earth’s Interior

Interior design

The mitochondrion is the 'power house' of the cell. The internal structure of the mitochondrion — in particular, the shape of the infoldings of the inner membrane (cristae) — has long been debated. Now, three-dimensional tomographic reconstructions like the ones above are resolving the controversy. At top left, a slice through a rat liver mitochondrion is reconstructed, showing 44 cristae (yell...