| excision | <surgery> To surgically remove. To excise tissue. (27 Sep 1997) |
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| excision biopsy | Excision of tissue for gross and microscopic examination in such a manner that the entire lesion is removed. (05 Mar 2000) |
| excision repair | <molecular biology> Mechanism for the repair of environmental damage to one strand of DNA (loss of purines due to thermal fluctuations, formation of pyrimidine dimers by UV irradiation). The site of damage is recognised, excised by an endonuclease, the correct sequence is copied from the complementary strand by a polymerase and the ends of this correct sequence are joined to the rest of the strand by a ligase. The term is sometimes restricted to bacterial systems where the polymerase also acts as endonuclease. (11 Nov 1997) |
| excisional biopsy | <surgery> Surgical removal of a lump or suspicious tissue by cutting the skin and removing the tissue. (09 Oct 1997) |
| excisionase | <enzyme> Acidic protein containing 66 amino acids; the xis gene is transcribed away form the viral attachment site; involved in site-specific recombination of staphylococcal bacteriophage phi 11; amino acid sequence has been determined Registry number: EC 2.7.7.- Synonym: xis protein, xis gene product (26 Jun 1999) |
| DNA excision | <molecular biology> The removal of a damaged segment of a DNA molecule by a group of DNA repair enzymes in order to repair the molecule. (09 Oct 1997) |
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| tRNA excision ligase | <enzyme> Processes pre-trna-tyr into mature trna-tyr Registry number: EC 6.5.1.- (26 Jun 1999) |
| loop electrocautery excision procedure | Electrocautery excisional biopsy of abnormal cervical tissue. (05 Mar 2000) |
| loop excision | A diagnostic and therapeutic gynecological surgical technique for removing dysplastic cells from the cervix. In this office procedure conducted with the aid of colposcopy, a small wire loop is used to excise visible patches of cervical intraepithelial neoplasia. Like cauterization, cryosurgery, and CO2 laser procedures, loop excision can be done with local anaesthetic, and is an uncomplicated, relatively inexpensive way of removing dysplastic cells; in addition, it provides material for biopsy. It is not advised for cases of severe dysplasia or carcinoma in situ, which are better addressed by cervical conization, an inpatient procedure. Synonym: loop resection. (05 Mar 2000) |
| lymph node excision | Surgical excision of one or more lymph nodes. Its most common use is in cancer surgery. (12 Dec 1998) |