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(hĕr″pēz″vī′rĭ-dē) [herpes + virus + -idae] A large family of structurally similar DNA viruses, all of which produce chronic infections and some of which can transform normal cells into malignant ones. Members of the Herpesviridae family are known as herpesviruses and include the herpes simplex viruses, cytomegalovirus, Epstein-Barr virus, varicella-zoster virus, and human herpesviruses 6, 7, and 8. SEE: herpesvirus.

herpesvirus, herpes virus

(hĕr′pēz-vī″rŭs) Any virus of the family Herpesviridae. SEE: Herpesviridae.

h. B B virus.

cercopithecine h. 1 B virus.

h. hominis Herpes simplex virus.

human h. 1 ABBR: HHV1. Herpes simplex virus 1. SEE: herpes simplex virus.

human h. 2 ABBR: HHV2. Herpes simplex virus 2. SEE: herpes simplex virus.

human h. 3 ABBR: HHV3. Varicella-zoster virus.

human h. 4 ABBR: HHV4. Epstein-Barr virus.

human h. 5 ABBR: HHV5. Cytomegalovirus.

human h. 6 A herpesvirus that causes sixth disease and childhood febrile seizures. It causes infections in immunocompromised patients, e.g., patients who have received organ transplants and patients with HIV infection. Among children, infants between 6 months and 2 years of age are at highest risk for this infection, and asymptomatic or unrecognized infection is probably common. The incubation period is about 5 to 15 days.

human h. 7 A herpesvirus closely related to human herpesvirus 6, associated with sixth disease, pityriasis rosea, neurological manifestations, and transplant complications.

human h. 8 A herpesvirus thought to cause Kaposi sarcoma. It has also been implicated in the pathogenesis of some lymphomas and lymphomatoid illnesses. SYN: Kaposi sarcoma–associated herpesvirus; Kaposi sarcoma herpesvirus.

h. simiae B virus


(hĕr-pet′ik) [herpes + -ic] Pert. to herpes.


(hĕr-pĕt′ĭ-form) [″ + L. forma, form] Resembling herpes.

Herring bodies

(hĕr′ĭng) [Percy T. Herring, Brit. physiologist, 1872–1967] Secretory granules found in the terminal nerve endings of the hypothalamus and hypophyseal tract.


(ār-săzh′) [Fr., a harrowing] The splitting of a nerve trunk into separate fibers.


(hĕrtz) [Heinrich R. Hertz, Ger. physicist, 1857–1894] ABBR: Hz. A unit of frequency equal to 1 cycle/sec. (CPS)

Heschl gyrus

(hesh′ĕl) [Richard Ladislaus Heschl, Austrian anatomist, 1824–1881] One of a set of short transverse gyri in the temporal lobe along the lateral sulcus. The gyri of Heschl include the primary auditory cortex. SYN: transverse temporal gyrus.


(he′zĭ-tăn-sē) Involuntary delay in initiating urination. ...

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