







The Hypogeum of the Aurelii or the Hypogeum of Aurelius Felicissimus is a privately run catacomb in Rome.[1] It is sited at the junction of the modern viale Manzoni and via Luzzatti, behind the ancient via Labicana, in the Esquilino district.[2] It is on two levels, the upper one originally being a semi-underground hall (only the bottom part of which survives) and the lower one consisting of two completely underground spaces.[3]
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Holobiont
A holobiont is an assemblage of a host and the many other species living in or around it, which together form a discrete ecological unit through symbiosis, though there is controversy over this discreteness. The components of a holobiont are individual species or bionts, while the combined genome of all bionts is the hologenome. The holobiont concept was initially introduced by the German theoretical biologist Adolf Meyer-Abich in 1943, and then apparently independently by Dr. Lynn Margulis in her 1991 book Symbiosis as a Source of Evolutionary Innovation. The concept has evolved since the original formulations. Holobionts include the host, virome, microbiome, and any other organisms which contribute in some way to the functioning of the whole. Well-studied holobionts include reef-building corals and humans.

Sarmizegetusa Regia
Sarmizegetusa Regia was the capital and the most important military, religious and political centre of the Dacians before the wars with the Roman Empire. Built on top of a 1200 m high mountain, the fortress, consisting of six citadels, was the core of a strategic and defensive system in the Orăștie Mountains. The archaeological site of Sarmizegetusa Regia is located in the village of Grădiștea de Munte in Hunedoara County.
Vincenzo Catena
Vincenzo Catena, conosciuto anche come Vincenzo di Biagio, è stato un pittore italiano di scuola veneziana del Rinascimento.