| FMS | fat-mobilizing substance; Fellow of the Medical Society; fibromyalgia syndrome; full mouth series |
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| GBS | gallbladder series; gastric bypass surgery; group B Streptococcus; general biopsychosocial screening... |
| GIS | gas in stomach; gastrointestinal series; geographic information system; guaranteed income supplement... |
| LFS | lateral facet syndrome; Li-Fraumeni syndrome; limbic forebrain structure; liver function series |
| MS | Maffuci syndrome; maladjustment score; mandibular series; Marfan syndrome; Marie-Strumpell [syndrome... |
| upper GI series | <investigation, radiology> A series of X-rays of the oesophagus, stomach, and small intestine (upper gastrointestinal, or GI, tract) that are taken after the patient drinks a barium solution. (barium is a white, chalky substance that outlines the organs on the X-ray.) (12 Dec 1998) |
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| lower GI series | <investigation, radiology> A radiographic diagnostic procedure that involves the introduction of a barium containing contrast material into the lower gastrointestinal tract via the anus. X-rays taken after instillation of the barium will outline the course and anatomy of the lower GI tract. (27 Sep 1997) |
| lymphoid series | The cells at various states in the development in lymphoid tissue of the mature lymphocytes, e.g., lymphoblasts, young lymphocytes, mature lymphocytes. (05 Mar 2000) |
| lyotropic series | <chemistry> A listing of anions and cations in order of their effect on protein solubility (tendency to cause salting out). Essentially a competition between the protein and the ion for water molecules for hydration. (20 Mar 1998) |
| birth | 1. The act or fact of coming into life, or of being born; generally applied to human beings; as, the birth of a son. 2. Lineage; extraction; descent; sometimes, high birth; noble extraction. "Elected without reference to birth, but solely for qualifications." (Prescott) 3. The condition to which a person is born; natural state or position; inherited disposition or tendency. "A foe by birth to Troy's unhappy name." (Dryden) 4. The act of bringing forth; as, she had two children at a birth. "At her next birth." 5. That which is born; that which is produced, whether animal or vegetable. "Poets are far rarer births that kings." (B. Jonson) "Others hatch their eggs and tend the birth till it is able to shift for itself." (Addison) 6. Origin; beginning; as, the birth of an empire. New birth, regeneration, or the commencement of a religious life. Synonym: Parentage, extraction, lineage, race, family. Origin: OE. Burth, birth, AS. Beor, gebyrd, fr. Beran to bear, bring forth; akin to D. Geboorate, OHG. Burt, giburt, G. Geburt, Icel. Burr, Skr. Bhrti bearing, supporting; cf. Ir. & Gael. Beirthe born, brought forth. 92. See 1st Bear, and cf. Berth. Source: Websters Dictionary (01 Mar 1998) |
| birth amputation | Amputation produced in utero; attributed to the pressure of constricting bands (amniotic); autosomal recessive inheritance. Synonym: amniotic amputation, amputation, birth amputation, intrauterine amputation, spontaneous amputation. (05 Mar 2000) |
| birth canal | Cavity of the uterus and vagina through which the foetus passes. Synonym: parturient canal. (05 Mar 2000) |
| birth certificates | Official certifications by a physician recording the individual's birth date, place of birth, parentage and other required identifying data which are filed with the local registrar of vital statistics. (12 Dec 1998) |
| birth control | Restriction of the number of offspring by means of contraceptive measures, projects, programs, or methods to control reproduction, by either improving or diminishing fertility. (05 Mar 2000) |
| birth defect | Defect present at birth; sometimes referred to as congenital defect. (05 Mar 2000) |
| birth fracture | Fracture occurring during the trauma of delivery or, occasionally, before delivery in infants with osteogenesis imperfecta. (05 Mar 2000) |
| birth injuries | Mechanical or anoxic trauma incurred by the infant during labour or delivery. (12 Dec 1998) |
| birth intervals | Interval between onset of sexual relations by a woman and the birth of her first child and intervals between successive births. This includes use of family planning to control birth intervals. (12 Dec 1998) |
| birth order | The sequence in which children are born into the family. (12 Dec 1998) |
| birth palsy | Indefinite term for any motor abnormality in the infant caused by or attributed to the birthing process; includes obstetrical paralysis, infantile hemiplegia, etc. Synonym: infantile hemiplegia. (05 Mar 2000) |