Fern species include staghorn fern ("Platycerium coronarium") and bird's nest fern ("Asplenium nidus"). Aneurysms can also be a nidus (starting point) for clot formation (thrombosis) and embolization. Cementicles are thought to form when calcification occurs around a nidus, a precipitating center. Its scientific name is derived from the Latin "nidus" "nest", hence 'nest shaped'. Antibiotics are used to treat any residual nidus of "S. equi". The word derives from the Latin "nidus" or nest, via the French "niche". He had reclassified the already known "A. nidus" in its own genus "Neottopteris". The term is derived from Latin "nidus" for "nest" and "fugere" meaning "to flee". The nidus, that began as a diffuse collection of MSCs, has become rudimentary bone tissue. The order Nidovirales is named for the Latin "nidus", which means 'nest'. "Asana" was another participant in Omni's Project Nidus. Without the power of the Nidus, Rothgo would ultimately die. Each aimed to obtain possession of the Nidus, a magical object of limitless power. The dark cleric, Verminaard of Nidus, was given command of the Red Wing. This nidus of infection can be a potential source for bad breath.