Mol-ecular and crystal structure of 5,9-dimethyl-5-pyrano[3,2-:5,6-']bis-[2,1-benzo-thia-zin]-7(9)-one 6,6,8,8-tetroxide di-methyl-formamide monosolvate.

The title mol-ecule crystallizes as a di-methyl-formamide monosolvate, CHNOS·CHNO. The mol-ecule was expected to adopt mirror symmetry but slightly different conformational characteristics of the condensed benzo-thia-zine ring lead to point group symmetry 1. In the crystal, mol-ecules form two types of stacking dimers with distances of 3.

Uncultured Members of the Oral Microbiome.

Around one-third of oral bacteria cannot be cultured using conventional methods. Some bacteria have specific requirements for nutrients while others may be inhibited by substances in the culture media or produced by other bacteria. Oral bacteria have evolved as part of multispecies biofilms, and many thus require interaction with other bacterial species to grow.

In vitro culture of previously uncultured oral bacterial phylotypes.

Around a third of oral bacteria cannot be grown using conventional bacteriological culture media. Community profiling targeting 16S rRNA and shotgun metagenomics methods have proved valuable in revealing the complexity of the oral bacterial community. Studies investigating the role of oral bacteria in health and disease require phenotypic characterizations that are possible only with live cultures.

[Hybrids of Aegilops cylindrica Host with Triticum durum Desf. and T. aestivum L].

The hybrids of durum and bread wheat with Ae. cylindrica have been obtained without using an embryo rescue technique. The hybrid output (of pollinated flower number) in the field conditions scored 1.