Large amounts of a heat-inducible phage lambda mutant (lambdaCI857) may be obtained under standardized conditions. The phage is harvested by simple polyethylene glycol (C 6000) precipitation and purified by CsCl density gradient banding. Deoxyribonucleic acid (DNA) is extracted by cold phenol and purified by sucrose density gradient sedimentation to yield a homogenous population of unbroken lam...

Fluorescence in situ hybridization of Anopheles darlingi and A. nuneztovari demonstrated nucleolar organizer region activity at the end of the fourth larval instar, when the nucleolar organizer regions underwent gradual condensation. The heteromorphic sex chromosomes showed intraindividual size variation in the rDNA blocks located in the pericentromeric region and this coincided with the locati...

Constitutive heterochromatin comprises a substantial fraction of the eukaryotic genomes and is mainly composed of tandemly arrayed satellite DNAs (satDNA). These repetitive sequences represent a very dynamic and fast evolving component of genomes. In the present work we report the isolation of Cricetus cricetus (CCR, Cricetidae, Rodentia) centromeric repetitive sequences from chromosome 4 (CCR4...

This work presents the description and chromosome number of Urostreptus atrobrunneus sp. nov. The genus until now had not been registered yet in the São Paulo State, Brazil. The meiotic analysis showed that the species presents 2n=24, XY. The C-banding revealed large blocks of constitutive heterochromatin and two heteromorphic chromosomal pairs, one of them corresponding to the sexual pair.

-1. The phosphoglycerate kinase electrophoretic banding patterns of several Drosophila species were studied. 2. Three banding types were noted: A type with a slowly migrating band of activity, a type with a faster migrating band of activity, and a type with an intermediate migrating band. 3. These banding types appeared to be species specific and may be useful in evolutionary or taxonomical stu...

Laparoscopic Adjustable Gastric Banding (LAGB) was done for the first time in Belgium in 1993. Gastric torsion after band slippage is extremely rare. Literature review of gastric banding and complications in pregnancy did not reveal any case of gastric torsion. Hence, we report this rare case of gastric torsion in a pregnant lady following gastric banding.

Patton, 1. C., and R. 1. Baker (Department of Biological Sciences and The Museum, Texas Tech University, Lubbock, Texas 79409) 1978. Chromosomal homology and evolution of phyllostomatoid bats. Syst. Zool. 27:449-462.-Gand C-banding analyses were used to determine chromosome homology from representatives of bat families Mormoopidae, Noctilionidae and Phyllostomatidae, subfamily Phyllostomatinae....

Background In the current surgical era PA banding is not indicated as palliation or stage procedure for patients with large VSD and severe PAH. We have reviewed our institutions experience in patients undergoing VSD repair with previously failed PA banding. Failure of PA banding was defined as pulmonary to aortic systolic pressure ratio (PASPR) > 0.8 in period of at least 6 months after palliat...