| bubble gum dermatitis | Allergic contact dermatitis developing about the lips in children who chew bubble gum; caused by plastics in the gum substance. (05 Mar 2000) |
|---|---|
| bubble shell | <zoology> A marine univalve shell of the genus Bulla and allied genera, belonging to the Tectibranchiata. Source: Websters Dictionary (01 Mar 1998) |
| stomach bubble | The gas in the fundus of the stomach seen on an upright radiograph. Cascade stomach, a radiographic description: when contrast material is swallowed while the patient is in the upright position, the gastric fundus acts as a reservoir until contrast overflows (cascades) into the antrum; a normal variant in a horizontal stomach. (05 Mar 2000) |
| double bubble sign | <radiology> Gas in stomach and duodenal bulb, duodenal atresia, annular pancreas, Ladd's bands, congenital duodenal web (or diaphragm) (12 Dec 1998) |
| bidirectional replication | A type of DNA replication where replication is moving along in both directions from the starting point. This creates two replication forks, moving in opposite directions. (09 Oct 1997) |
| virus replication | The process of intracellular viral multiplication, consisting of the synthesis of proteins, nucleic acids, and sometimes lipids, and their assembly into a new infectious particle. (12 Dec 1998) |
| repetition/replication | There are four plots in a repetition/replication, the early, mid and late seral treatment plots and a control plot. A repetition/replication is also called a "block." There should be at least three repetitions/ replications in a research study to obtain statistical reliability. (05 Dec 1998) |
| replication | 1. A turning back of a part so as to form a duplication. 2. <molecular biology> The process of duplicating or reproducing, as the replication of an exact copy of a polynucleotide strand of DNA or RNA. Origin: L. Replicatio = a fold backwards (14 May 1997) |
| replication, DNA | A wondrous complex process whereby the ( parent ) strands of DNA in the double helix are separated and each one is copied to produce a new ( daughter ) strand. This process is said to be semi-conservative since one of each parent strand is conserrved and remains intact after replication has taken place. (12 Dec 1998) |
| replication fork | A Y-shaped region in a chromosome that serves as the growing site for DNAreplication. (09 Oct 1997) |
| replication origin | A unique DNA sequence of a replicon at which DNA replication is initiated and proceeds bidirectionally or unidirectionally. It contains the sites where the first separation of the complementary strands occurs, a primer RNA is synthesised, and the switch from primer RNA to DNA synthesis takes place. (rieger et al., glossary of genetics: classical and molecular, 5th ed) (12 Dec 1998) |
| replication site | The in vivo site on DNA of DNA replication. (05 Mar 2000) |
| conservative replication | <molecular biology> Replication of DNA in such a way that the original parent strands of the DNA molecule end up back with each other. The entire preexisting double-stranded DNA molecule is conserved during each round of replication. Compare: semiconservative replication. (09 Oct 1997) |
| saemiconservative replication | Replication in which a double-stranded DNA (dsDNA) produces two daughter dsDNA, each of which contains one of the original chains and one newly synthesised strand. (05 Mar 2000) |
| saltatory replication | The sudden amplification of a DNA sequence to generate many copies in a tandem arrangement. Possible mechanism for the origin of satellite DNA. (18 Nov 1997) |