| test cross | Crossing of an unknown genotype to a recessive homozygote so that the phenotype of the progeny corresponds directly to the chromosomes carried by the parents of unknown genotype. In experimental genetics, a deliberate mating designed to test claims about the pattern of inheritance of one or more traits. Synonym: backcross. (05 Mar 2000) |
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| League of Red Cross Societies | The international federation of national Red Cross and similar societies. (05 Mar 2000) |
| Abbe flap | A full-thickness flap of the middle portion of the lower lip that is transferred into the upper lip, or vice versa. (05 Mar 2000) |
| advancement flap | A rectangular flap raised in an elastic area, with its free end adjacent to a defect; the defect is covered by stretching the flap longitudinally until the end comes over it. Synonym: advancement flap, French flap. (05 Mar 2000) |
| arterial flap | A flap that includes a direct specific artery within its longitudinal axis. Synonym: arterial flap. (05 Mar 2000) |
| axial pattern flap | A flap that includes a direct specific artery within its longitudinal axis. Synonym: arterial flap. (05 Mar 2000) |
| bilobed flap | A flap consisting of two lobes at approximately right angles, based on a common pedicle. (05 Mar 2000) |
| bipedicle flap | A flap with two pedicles, one at each end. Synonym: double pedicle flap. (05 Mar 2000) |
| bone flap | Portion of cranium removed but left attached to overlying soft tissue structures. (05 Mar 2000) |
| buried flap | A flap denuded of both surface epithelium and superficial dermis and transferred into the subcutaneous tissues. (05 Mar 2000) |
| capsular flap pyeloplasty | A reconstructive procedure for correction of uteropelvic obstruction, whereby a flap of renal capsule is swung down from the renal hilus to enlarge an obstructed intrarenal pelvis and upper ureter; used to correct situations involving loss of renal pelvic tissue which preclude the use of renal pelvis for the reconstruction. (05 Mar 2000) |
| random pattern flap | A flap in which the pedicle blood supply is derived randomly from the network of vessels in the area, rather than from a single longitudinal artery as in an axial pattern flap. (05 Mar 2000) |
| parabiotic flap | A skin flap bridging from one animal to another. (05 Mar 2000) |
| gingival flap | A portion of the gingiva whose coronal margin is surgically detached from the tooth and the alveolar process. (05 Mar 2000) |
| caterpillar flap | A tubed flap transferred end-over-end (in stages) from the donor area to a distant recipient area. Synonym: waltzed flap. (05 Mar 2000) |