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    1. Home
    2. A-Z Dictionary
    3. Letter H

    Medical terms - Letter H

    858 terms start with the letter H.

    • HPIV

      Human parainfluenza virus

    • HPS

      1. Hantavirus pulmonary syndrome.2. Hermansky-Pudlak syndrome

    • HPV

      See: Human papillomavirus

    • HRT (hormone replacement therapy)

      The combination therapy of estrogen plus progestogen, termed hormone replacement therapy (HRT). Estrogen replacement therapy (ERT) is used to treat menopause. It reduces or stops the short-term changes of menopause such…

    • HS

      Hereditary spherocytosis. HS also stands for half-strength, hamstrings, heart sounds, heparan sulfate, hernia sac, and house surgeon.

    • HSA

      1. In the US, Health Saving Account.2. Human serum albumin

    • HSAN III

      Hereditary sensory and autonomic neuropathy III. See: Familial dysautonomia.

    • HSP

      Henoch-Schonlein purpura. See: Schonlein-Henoch purpura

    • Ht

      Abbreviation for height (and also heart)

    • HT1A

      See: 5-HT1A

    • HTLV

      Human T-lymphotropic virus

    • HTLV-I

      Human T-lymphotropic virus type I, often referred to simply as the human T-lymphotropic virus (HTLV). HTLV-II stands for human T-lymphotropic virus type II, which is closely related to HTLV-I. HTLV-III is now known as…

    • HTLV-II

      The human T-lymphotropic virus type II, which is closely related to HTLV-I

    • HTLV-III

      The human T-lymphotropic virus type III. An obsolete term for the human immunodeficiency virus or HIV

    • HTR1A

      A gene on chromosome 5 that encodes a type of receptor for serotonin. See: 5-HT1A

    • Hughes Investigator

      See: Howard Hughes Medical Institute

    • Hughlings Jackson

      See: Hughlings Jackson, John

    • Hughlings Jackson, John

      (1835-1911) English physician who pioneered the development of neurology as a medical specialty during the reign of Queen Victoria. John Hughlings Jackson has been called the 'father of English neurology.' Jackson made…

    • HUGO

      Acronym for the Human Genome Organisation, the international organization of scientists involved in the Human Genome Project, the global initiative to map and sequence the human genome. HUGO was established in 1989 by a…

    • Human chorionic gonadotropin

      (hCG) A human hormone made by chorionic cells in the fetal part of the placenta. Human chorionic gonadotropin (hCG) is directed at the gonads and stimulates them. Hence, the name 'gonadotropin.' The presence of hCG is…

    • Human chromosome count

      The usual number of chromosomes in humans, 46 chromosomes. Also called the human chromosome complement. History: For half a century, the human chromosome count was widely believed to be 48. That changed on Dec. 22…

    • Human cloning

      Human cloning for the purposes of creating a human being. Also called human reproductive cloning. The physician and essayist Lewis Thomas commented: 'The cloning of human beings is on most of the lists of things to…

    • Human Development, . . . (NICHD)

      Of Child Health and (NICHD): One of the US National Institutes of Health, NICHD is in a sense the NIH for kids in that it is concerned with child health. The mission of the NICHD is, in formal terms, to support and…

    • Human embryonic stem cell

      Stem cell: Also known as a human pluripotent stem cell, one of the 'cells that are self-replicating, are derived from human embryos or human fetal tissue, and are known to develop into cells and tissues of the three…

    • Human gene map

      The locations of the human genes. The location of each gene is called a locus (plural: loci). The total number of known gene loci on the human gene map as of June 24, 2000 was 6270. Chromosome 1 contained the most gene…

    • Human gene therapy

      Insertion of normal DNA directly into cells to correct a genetic defect. The treatment of disease by replacing, altering, or supplementing a gene that is absent or abnormal and whose absence or abnormality is…

    • Human genome

      All of the DNA that a person possesses. The human genome is made up of all of the DNA in our chromosomes as well as that in our mitochondria. (Each of us has, in fact, two genomes -- a large chromosomal genome and a…

    • Human Genome Organisation

      The international organization of scientists involved in the Human Genome Project, the global initiative to map and sequence the human genome. The Human Genome Organisation (HUGO) was established in 1989 by a group of…

    • Human Genome Project

      International effort aimed at identifying and sequencing (ordering) all of the bases in the human genome. American participation in this monumental undertaking has been supported by funds from the National Institutes of…

    • Human Genome Research Institute, National

      RI): One of the newest of the National Institutes of Health (NIH), NHGRI's mission in formal terms is to 'support the NIH component of the Human Genome Project, a worldwide research effort designed to analyze the…

    • Human growth

      See: Normal growth

    • Human herpesvirus 1 (HHV-1)

      A herpes virus that causes cold sores and fever blisters in and around the mouth. Here is a depiction of a typical fever blister caused by HHV-1: NTER> In rare cases, as when the immune system is severely compromised…

    • Human herpesvirus 2 (HHV-2)

      A herpes virus that causes genital herpes, characterized by sores in the area of the genitalia. Genital herpes is a sexually transmitted disease (STD). This virus, like human herpesvirus 1, can cause infection of the…

    • Human herpesvirus 3

      See herpes zoster.

    • Human herpesvirus 4

      See Epstein-Barr virus.

    • Human herpesvirus 5

      See cytomegalovirus.

    • Human herpesvirus 6

      A herpes virus that apparently lies dormant in many people, human herpesvirus 6 is most likely to cause problems when the immune system is compromised by disease, as in AIDS patients, or by deliberate immune…

    • Human herpesvirus 7

      Closely related to HHV-6, human herpesvirus 7 has also been linked to roseola. Researchers believe it may also cause seizures and other central nervous system symptoms in children. Diagnosis is by rapid blood culture or…

    • Human herpesvirus 8 (HHV-8)

      A herpesvirus that contributes to the development of Kaposi sarcoma, an otherwise rare form of cancer sometimes seen in AIDS patients, and to some B-cell lymphomas. The predominant route of HHV-8 transmission is sexual…

    • Human immunodeficiency virus

      Human immunodeficiency virus: HIV, the cause of AIDS. HIV has also been called the human lymphotropic virus type III, the lymphadenopathy-associated virus and the lymphadenopathy virus. No matter what name is applied…

    • Human kinome

      See Kinome

    • Human lymphotropic virus III

      Another name for the human immunodeficiency virus (HIV), the cause of AIDS.

    • Human metapneumovirus

      A novel virus that is a ubiquitous and important agent of respiratory disease. The human metapneumovirus (hMPV) was discovered in 2001 in young children in The Netherlands with acute respiratory illnesses ranging from…

    • Human neutrophil peptide

      See: Defensin

    • Human papilloma virus

      See: Human papillomavirus

    • Human papillomavirus

      One in a group of four RNA viruses that rank second only to respiratory syncytial virus (RSV) as a common cause of lower respiratory tract disease in young children. Like RSV, human parainfluenza viruses (HPIVs) can…

    • Human parainfluenza virus

      One in a group of four RNA viruses that rank second only to respiratory syncytial virus (RSV) as a common cause of lower respiratory tract disease in young children. Like RSV, human parainfluenza viruses (HPIVs) can…

    • Human pluripotent stem cell

      Stem cell: One of the 'cells that are self-replicating, are derived from human embryos or human fetal tissue, and are known to develop into cells and tissues of the three primary germ layers. Although human pluripotent…

    • Human reproductive cloning

      HTLV. A retrovirus that causes adult T-cell leukemia. HTLV is endemic (constantly present) in southern Japan and the Caribbean basin and occurs sporadically in Africa, Latin America, the Middle East, and the US. Adult…

    • Human T-lymphotropic virus

      HTLV. A retrovirus that causes adult T-cell leukemia. HTLV is endemic (constantly present) in southern Japan and the Caribbean basin and occurs sporadically in Africa, Latin America, the Middle East, and the US. Adult…

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