A prospective study of Campylobacter jejuni infection was performed during a 6-month period in a cohort of 198 Chilean infants. Surveillance was based on biweekly home visits by a team of trained nurses. C. jejuni colonization ...

Rats learned to discriminate between two degrees of roughness, detecting the stimuli only with their vibrissal system. After bilateral trimming of the vibrissae, performance abruptly dropped to chance levels and remained ...

Streaming potentials arising across large-conductance Ca2+-activated K+ channels incorporated into planar lipid bilayers were measured. Ca2+-activated channels obtained either from skeletal muscle or from smooth muscle ...

Mitochondrial function appears to be an early target for ethanol toxicity, however it is not clear to what extent the effects of ethanol, which occur at levels of intake lower than those already reported in the literature, ...

Transverse tubule vesicles isolated from frog skeletal muscle display sodium-calcium exchange activity, which was characterized measuring 45Ca influx in vesicles incubated with sodium. The initial rates of exchange varied ...

To the Editor: Regarding the issue of HIV infection and AIDS in the Americas, the situation in Brazil reported by Cortes et al. (April 13 issue)1 is certainly not unique. The authors suggest a fourth pattern of the spread ...

The effect of t-butyl-4-hydroxyanisole (BHA), a widely used food antioxidant additive, on the culture growth, oxygen consumption, and redox state of some electron carriers of intact TA3 and 786A ascites tumor cells has ...