Category: H

A species that often colonizes the upper respiratory tract, but may occasionally cause endocarditis, brain abscesses, meningitis, or osteomyelitis.  

A genus of mosquitoes that includes species that are vectors of yellow fever.  

A species of leech fond in certain humid, tropical areas.  

A genus of terrestrial leeches found in Asia that attach to humans and animals.  

A member of a group of subatomic particles including the proton and the neutron. Tightly focused beams of hadrons are used in radiation therapy to destroy cancerous tissue.  

A tension-discharging phenomenon such as head banging, body rocking, thumb sucking, nail biting, hair pulling, tics, or teeth grinding, usually beginning in childhood. The habit’s importance depends upon its etiology and persistence. Almost all children will demonstrate one or more of these disorders during their development, but if it does not interfere with function it…

The generation of toxic oxygen and hydroxyl radicals from hydrogen peroxide and superoxide. These radicals contribute to cell injury in many diseases, e.g., in the brain or heart after a stroke or heart attack.  

A depressed triangular area located on the lateral aspect of the posterior portion of the third ventricle. It contains a medial and lateral habenular nucleus.  

A band of transverse fibers connecting the two habenular areas.  

One of two whitish bands between the clitoris and meatus urethra in young females.