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The holly plant family of the order Celastrales, subclass Rosidae, class Magnoliopsida.

A plant genus of the family RANUNCULACEAE that contains aquiledine, isoaquiledine and cycloartane-type glycosides.

A plant genus of the family BRASSICACEAE that contains ARABIDOPSIS PROTEINS and MADS DOMAIN PROTEINS. The species A. thaliana is used for experiments…

A plant genus of the family BRASSICACEAE. Member species are ornamentals grown for their numerous small white, yellow, pink, or purplish flowers.

A plant family of the order ALISMATALES. Many members contain OXALIC ACID and calcium oxalate (OXALATES).

A plant genus of the family FABACEAE that includes peanuts.

A class of Arthropoda that includes SPIDERS; TICKS; MITES; and SCORPIONS.

A plant genus in the family Araliaceae.

The ginseng plant family of the order Apiales, subclass Rosidae, class Magnoliopsida. Leaves are generally alternate, large, and compound. Flowers ar…

A genus of evergreen conifer of the family Araucariaceae, order Pinales, that includes the monkey puzzle (Araucaria araucana).

An evergreen tree commonly known as the monkey-puzzle tree. It grows to 1-1.5 m in diameter and 30-40 m in height, and is native to central and south…

A family of dioecious or monoecious evergreen trees belonging to the order Pinales, subclass Pinidaes, with spirally arranged, narrow or broad leaves…

A genus of SEA URCHINS in the family Arbaciidae. They have only one spheridium (stalked body) per ambulacral area (contains tube feet); most sea urch…

Arthropod-borne viruses. A non-taxonomic designation for viruses that can replicate in both vertebrate hosts and arthropod vectors. Included are some…

A genus of facultatively anaerobic, gram-positive bacteria in the family ACTINOMYCETACEAE, order ACTINOMYCETALES. They are obligate parasites of the …

One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered…

Viruses whose hosts are in the domain ARCHAEA.

An order of extremely thermophilic, sulfate-reducing archaea, in the kingdom EURYARCHAEOTA. The single family Archaeoglobaceae contains one genus ARC…

A genus of extremely thermophilic, sulfate-reducing archaea, in the family Archaeoglobaceae.

A species of extremely thermophilic, sulfur-reducing archaea. It grows at a maximum temperature of 95 degrees C. in marine or deep-sea geothermal are…

A group (some say infraphylum) of AMOEBOZOA that lack mitochondria.

A family of ark shell mollusks, in the class BIVALVIA. They have soft bodies with platelike GILLS enclosed within two shells hinged together.

A genus of gram-negative, aerotolerant, spiral-shaped bacteria isolated from water and associated with diarrhea in humans and animals.

A plant genus of the family ASTERACEAE. Arctiin (LIGNANS) is in the seed.

A plant genus of the family ERICACEAE.

A plant genus of the family MYRSINACEAE. Members contain ardisiacrispins (oleanane triterpenoid saponins), ardicrenin, and cyclamiretin.

A plant genus of the family ARECACEAE. Members contain ARECOLINE and CATECHIN. The leaves and nuts have been used as masticatories, stimulants, and a…

The palm family of order Arecales, subclass Arecidae, class Liliopsida.

A plant genus of the family CARYOPHYLLACEAE. The common name of sandwort is used with other plants. Do not confuse with Arenaria bird or with other g…

A family of RNA viruses naturally infecting rodents and consisting of one genus (ARENAVIRUS) with two groups: Old World Arenaviruses (ARENAVIRUSES, O…