We tested recognition memory for items and associations in memory-impaired patients with bilateral lesions thought to be limited to the hippocampal region. In Experiment 1 (Combined memory test), participants studied words and then took a memory test in which studied words, new words, studied word pairs, and recombined word pairs were presented in a mixed order. In Experiment 2 (Separated memor...

Genetic exchange within one Archaean lineage is a bit like sex in eukaryotes - cells fuse and huge segments of DNA are recombined - with consequences for the spread of adaptations across species.

We demonstrate coherent combining of two fiber chirped pulse amplifiers seeded by a common oscillator. A phase stability of λ/20 is obtained using a fiber electro-optic phase modulator, and the recombined pulsewidth is 485 fs.

Tryptic hydrolysis after reduction and carboxamidomethylation of staphylococcal enterotoxin B cleaved the single susceptible bond located between the 2 half-cystines of the molecule, Lys-Thr at positions 97 and 98 (Spero, L., Warren, J. R., and Metzger, J. F. (1973) J. Biol. Chem. 248, 7289-7294). The product remained as a single particle but was separated into the two constituent peptides by d...

Gravity drainage is one of the important recovery mechanisms in fractured carbonate and conventional reservoirs. It occurs due to density difference between the gas in fracture and the oil in matrix as well as in conventional tilted reservoirs. Oil phase will form films which are produced under gravity forces (film flow). Many gas injection experiments have been done on laboratory scales with d...

Intermolecular recombination between two IS5 elements was measured, using bacteriophage lambda recombination vectors, and was compared to recombination between two copies of an SV40 segment cloned into the same vectors. Experiments were conducted in the presence and in the absence of RecA and Red functions, and with the recombining inserts in the same or in reversed orientation. Under all condi...

The mechanism of generating immunoglobulin light chain genes by rearrangement of variable (V), joining (J), and constant (C) gene segments is still unknown. It has been discussed mostly in terms of excision and deletion of the DNA between the recombined V and J gene segments. However, the finding of DNA digests from the mouse myeloma T of a fragment (called f-T) that contains the 3' flank of a ...

DNA fragments containing immunoglobulin kappa-chain sequences from two different plasmacytomas (PC 3609 and PC 7043) were found by blot-hybridization studies to be dissociated from germ-line sequences on both the 3' and 5' ends. These fragments were cloned, sequenced, and found to contain the structural features of a product of two recombination events. Each contained a variable (V kappa) gene ...

The solventogenic clostridia have a considerable capacity to ferment carbohydrate substrates with the production of acetone and butanol, making them attractive organisms for the conversion of waste materials to valuable products. In common with other anaerobes, the clostridia show a marked dependence on the phosphoenolpyruvate (PEP)-dependent phosphotransferase system (PTS) to accumulate sugars...