Embryo Selection for a Carrier of an Early-Onset Alzheimer's Disease-Associated Mutation in the PSEN1 Gene.

Alzheimer's disease (AD) is the most common neurodegenerative dementia. It manifests as early-onset or late-onset AD. Early-onset AD represents about 5.

Primary drug resistance in a region with high burden of tuberculosis. A critical problem.

Objective: To determine rates of drug resistance in new cases of pulmonary tuberculosis in a region with a high burden of the disease.

Materials And Methods: New case suspects were referred for drug susceptibility testing.

Results: 28.

Molecular characterization of Mycobacterium bovis isolates from patients with tuberculosis in Baja California, Mexico.

The incidence of tuberculosis (TB) from Mycobacterium bovis in humans is likely to be underestimated and in some cases even ignored in most developing countries. This may be due to the difficulty of differentiating TB caused by either Mycobacteriumtuberculosis or M. bovis.

Latent tuberculous infection prevalence among paediatric contacts of drug-resistant and drug-susceptible cases.

Setting: Tuberculosis (TB) clinic in Tijuana, México.

Background: Tuberculin conversion rates in contacts of drug-resistant cases have been reported to be lower than among contacts of drug-susceptible cases.

Objective: To determine if the prevalence of latent tuberculous infection (LTBI) among paediatric contacts of drug-resistant cases is lower than that of contacts of drug-susceptible cases.