| exon shuffling | <molecular biology> Process by which the evolution of proteins with multifunctional domains could be accelerated. If exons each encoded individual functional domains, then introns would allow their recombination to form new functional proteins with minimal risk of damage to the sequences encoding the functional parts. (18 Nov 1997) |
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| exon trapping | <molecular biology, technique> A technique used to identify exons with a specialised vector. The vector has two exons that are normal, splicedtogether in a transcript.Fragments of DNA can be inserted into the intron, and when the insert is an exon, the exon is splicedinto the transcript, thereby giving a longer transcript that can be detected by Northern blotanalysis. (09 Oct 1997) |
| exon trapping vincent van buren | <molecular biology, technique> A technique used to identify vector. The vector has two exons that are normal, splicedtogether in a transcript.Fragments of DNA can be inserted into the intron, and when the insert is an exon, the exon is splicedinto the transcript, thereby giving a longer transcript that can be detected by Northern blotanalysis. (09 Oct 1997) |
| exons | Coding regions of messenger RNA included in the genetic transcript which survive the processing of RNA in cell nuclei to become part of a spliced messenger of structural RNA in the cytoplasm. They include joining and diversity exons of immunoglobulin genes. (12 Dec 1998) |
| exonuclear gene | <molecular biology> A gene that is not located in the nucleus of the cell. Examples are the genes found in mitochondria and chloroplasts (organelles outside of the nucleus). (09 Oct 1997) |
| exonuclease | <enzyme, molecular biology> An enzyme that cleaves nucleotides sequentiallyfrom the free ends of a linear nucleic acid substrate. (09 Oct 1997) |
| exonuclease III | An exonuclease enzyme which removes nucleotides one at a time from the 5'-end of duplex DNA which does not have a phosphorylated 3'-end. (09 Oct 1997) |
| exonuclease lambda | An exonuclease enzyme that removes nucleotides from the 5' end of duplex DNA which have 5'-phosphate groups attached to them. (09 Oct 1997) |
| exonuclease vii | An exonuclease enzyme which makes oligonucleotides by cleaving chunks of nucleotides off of both ends of single-stranded DNA. (09 Oct 1997) |
| exonucleases | <enzyme> Any of the enzymes of the hydrolase class that catalyze the hydrolysis of terminal bonds of deoxyribonucleotide or ribonucleotide chains, releasing mononucleotides. Registry number: EC 3.1.- (12 Dec 1998) |
| exopathogen | A disease-causing virus or bacteria which causes plant diseases from outside of the plant, without having to invade the plant's tissues. (09 Oct 1997) |
| exopeptidase | A hydrolase enzyme that removes the end amino acids of a polypeptide by cleaving peptide bonds. (09 Oct 1997) |
| exophiala | A normally saprophytic dematiaceous deuteromycetous fungal genus of the class hyphomycetes, order hyphomycetales. Infections in humans include phaeohyphomycosis, peritonitis, and chromoblastomycosis. (12 Dec 1998) |
| Exophiala jeanselmei | A species found in cases of mycetoma or phaeohyphomycosis. (05 Mar 2000) |
| Exophiala werneckii | A species that causes tinea nigra. Synonym: Cladosporium werneckii. (05 Mar 2000) |
| exudate |
a substance that oozes out from plant pores exude: release (a liquid) in drops or small quantities; "exude sweat through the pores"
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| explode |
cause to burst with a violent release of energy; "We exploded the nuclear bomb" burst outward, usually with noise; "The champagne bottle exploded" show a violent emotional reaction; "The boss exploded when he heard of the resignation of the secretary" be unleashed; emerge with violence or noise; "His anger exploded" destroy by exploding; "The enemy exploded the bridge" cause to burst as a result of air pressure; of stop consonants like /p/, /t/, and /k/ drive from the stage by noisy disapproval show (a theory or claim) to be baseless, or refute and make obsolete detonate: burst and release energy as through a violent chemical or physical reaction;"the bomb detonated at noon"; "The Molotov cocktail exploded" increase rapidly and in an uncontrolled manner; "The population of India is exploding"; "The island's rodent population irrupted"
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| exteroceptive |
of or relating to exteroception
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| exudation |
exudate: a substance that oozes out from plant pores the process of exuding; the slow escape of liquids from blood vessels through pores or breaks in the cell membranes
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| exenterate |
remove the contents of (an organ)
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| EX | a deliberate act of omission |
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| EX | the state of being excluded |
| EX | the state of being excommunicated |
| EX | no two electrons or protons or neutrons in a given system can be in states characterized by the same set of quantum numbers |
| EX | a rule that provides that otherwise admissible evidence cannot be used in a criminal trial if it was the result of illegal police conduct |
| EX | a news report that is reported first by one news organization |
| EX | not divided among or brought to bear on more than one object or objective |
| EX | excluding much or all |
| EX | not divided or shared with others |
| EX | a right reserved exclusively by a particular person or group (especially a hereditary or official right) |
| EX | without any others being included or involved |
| EX | tendency to associate with only a select group |